“Make it up” summary — Marie Rayma

Introduction

Commercial cosmetics often hide irritating chemicals, synthetic surfactants, and unnecessary fillers behind confusing marketing labels. You might struggle to find store-bought products that truly suit your skin without causing breakouts, dryness, or allergic reactions. Making your own cosmetics gives you complete control over every ingredient, allowing you to customize texture, slip, and performance.

Marie Rayma demonstrates in Make It Up that you can craft safe, high-performance beauty products at home. You will learn to work with precise weights, master essential sanitation habits, and formulate everything from simple oil serums to complex emulsions and color cosmetics.

Which tools and safety habits do you need for home formulation?
How do you blend oils and waxes for stable moisture?
What preserves water-based lotions against bacteria?
How can you customize mineral powders and color cosmetics?

1. Essential DIY Habits and Equipment

Homemade cosmetics require precision and care before you begin mixing. A successful batch starts with accurate measurements and reliable hygiene habits.

Proper sanitation, precise digital scales, and meticulous record-keeping form the foundation of safe and reproducible homemade cosmetics.

Working in weights

Measuring ingredients by weight in ounces or grams rather than volume is essential for accuracy, especially with irregular or solid ingredients. Volume measurements introduce variable amounts of air pockets with irregularly shaped solids. Weight precision is critical when formulating tiny cosmetic batches.

A typical weight of a jar of lipstick is 0.17 ounce or 5 g. One ounce equals 28.3495 grams.

Place your container on the digital scale.
Press the tare or zero button to eliminate the weight of the container.
Weigh your ingredients into your container.

Good DIY-ing habits

Because homemade production cannot be completely sterile, tools and containers must be rinsed in a 5 percent bleach solution and allowed to dry before starting.

Rinse your tools and containers in a 5 percent bleach solution.
Let them dry completely before making things.

Meticulous record-keeping of all formulas, weights, modifications, and dates is crucial for reproducing successful shades and troubleshooting recipes. Tracking every addition of pigment allows the maker to effortlessly recreate favorite shades of mineral foundations and eye shadows without fear of discontinued products.

Write down all your formulas, modifications, weights, measurements, and procedures.
Note the date and evaluate how the recipe performed a week and a month later.
Carefully tally up each addition of each pigment to recreate shades.

Cleanup tips

Coffee grinders used for mineral powders require specific maintenance, including avoiding water and lubricating the shaft when it squeals. Water will leak down into the motor and destroy the appliance, so cleaning should rely on brushes, powdered rice to pick up leftover pigments, and a drop of lubricant on the shaft if it makes noise.

The author destroyed at least one coffee grinder by trying to clean it like a blender with hot water and detergent.

Use a brush to get as much powder as possible out of the grinder.
Pop a tablespoon of rice in the grinder and blend that up before brushing it out.
Use a moistened paper towel to wipe out the grinding dish and wash the lid with soap and water.
Apply a drop of WD-40 to a cotton bud and massage it around the base of the grinding shaft if the grinder shrieks.

2. Oil-Based Cosmetics and Serums

Carrier oils act as the base or diluting agents in oil-based cosmetics and determine consistency, absorption speed, and melting point. Eliminating or swapping carrier oils without considering their room-temperature state, absorption rate, and melting point will alter the product and cause it to fail.

Oil-based products rely on carrier oils, waxes, and antioxidants to deliver rich moisture and stability without requiring water-based preservatives.

Olive oil solidifies at 34°F or 1°C. Coconut oil melts at 75°F or 24°C. Cocoa butter melts at 93°F or 34°C. Human body temperature is approximately 98°F or 37°C. Shea butter melts at 100°F or 38°C.

Beeswax acts as a powerful thickener and solidifying agent in balms and salves, but excessive amounts ruin the product's texture. Using too much beeswax makes the final product hard, sticky, and prone to skidding across the skin. The minimum ratio for workable consistency is one part beeswax to three parts liquid oils by weight. Beeswax, or Cera alba, melts at 145°F or 63°C, while cocoa butter begins to soften at 85°F or 30°C.

Oil-based cosmetics

Cosmetics containing water are susceptible to bacterial and mold growth requiring broad-spectrum preservatives, while oil-based products are vulnerable to rancidity. Oils oxidize over time and develop a scent reminiscent of old nuts or crayons. Vitamin E oil acts as an antioxidant to help delay this oxidation process, utilizing tocopherol at a 0.5 percent concentration.

Keep an eye out for changes in color, scent, texture, consistency, and mold.
Discard and remake any product showing signs of spoilage or rancidity.

Starter projects

Simple body oils combine fast-absorbing carrier oils like grapeseed with nourishing oils like jojoba and vitamin E to provide quick moisture. Blending lighter grapeseed oil with richer jojoba oil ensures the mixture absorbs rapidly into dry skin while vitamin E prevents oil oxidation.

The author started making body oil after adopting a housewarming gift of massage oil given to her parents. Making this recipe takes about 2 minutes and yields 1 fluid ounce or 30 mL.

Measure 4 teaspoons or 20 mL of grapeseed oil into a 1-ounce or 30 mL bottle using a small funnel.
Add 2 teaspoons or 10 mL of jojoba oil.
Add 10 drops of vitamin E oil.
Add 5 drops of lavender essential oil if desired.
Cap the bottle firmly and shake for 10 seconds to combine.

Skin Care Serums

Pure argan oil functions naturally as a facial serum due to its high vitamin E content, anti-aging properties, and ability to balance skin without clogging pores. Argan oil absorbs quickly and requires no preservatives since it is entirely oil-based, though it eventually oxidizes and goes rancid over time.

The author was initially afraid of putting oil on her skin until her friend Meredith convinced her to try argan oil. The Essential Argan Serum recipe yields 0.5 fluid ounce or 15 mL.

Measure 1 tablespoon (15 mL) argan oil and 10 to 20 drops of optional essential oils into a half-ounce (15 mL) glass bottle with an eyedropper cap using a funnel.
Cap tightly and shake for 10 seconds to combine.
Glide a few drops across the face with fingers or place a drop on each cheek and forehead after washing.

Evening primrose oil is rich in linoleic acid and gamma-linoleic acid, which help reduce acne, decrease breakouts, and boost healing in acne-prone skin. Acne-sufferers are often deficient in linoleic acid. When blended with argan oil, evening primrose oil's strong oily scent is reduced.

After adding evening primrose oil to her daily routine, the author noticed significantly fewer breakouts that healed faster. The Magical Primrose Argan Serum yields 0.5 fluid ounce or 15 mL.

Measure 1½ teaspoons (7.5 mL) argan oil, 1½ teaspoons (7.5 mL) evening primrose oil, and 10 to 20 drops of optional essential oils into a half-ounce (15 mL) glass bottle with an eyedropper lid using a funnel.
Seal tightly and shake for 10 seconds to combine.
Massage a few drops into the skin after cleansing.

3. Emulsions, Balms, and Cleansers

Combining oil and water creates light lotions and cleansing balms that require broad-spectrum preservatives to prevent bacterial growth.

Lip Balms

Lip balm is fundamentally a wax softened with oils and butters. Beeswax provides essential staying power and a slight tacky finish. More wax increases longevity at the expense of glide. Because lip balms are entirely oil-based, they do not require preservatives. Vitamin E delays rancidity.

The author developed the Naked Lip Balm in her dorm room kitchen during a dry winter to break dependence on commercial $5 lip balms.

Prepare a water bath by bringing about 2 inches (5 cm) of water to a gentle simmer in a small saucepan.
Weigh 0.35 ounce (10 g) beeswax, 0.42 ounce (12 g) coconut oil, 0.25 ounce (7 g) cocoa butter, 0.67 ounce (19 g) sweet almond oil (or grapeseed or jojoba oil), and 6 drops vitamin E oil into a heat-resistant glass measuring cup with a spout.
Place the measuring cup in the water bath to melt everything together for about 10 minutes until no solid bits remain.
Dry the outside of the measuring cup, stir with a thin silicone spatula, and carefully pour into twelve lined-up 0.15 ounce (4.25 g) lip balm tubes.
Let solidify for about 10 minutes until opaque and uniform in color before capping and labeling.

Emulsions and Preservatives

Emulsions combine oil and water using double-ended emulsifier molecules. Complete emulsifying waxes blend fatty acids and emulsifiers to create stable creams that absorb faster than pure oils. Common examples include Emulsifying Wax NF, BTMS-50, Polawax, and Ritamulse SCG.

Antioxidants like vitamin E prevent oil rancidity. They cannot prevent bacterial growth in water. Broad-spectrum preservatives like Liquid Germall Plus are mandatory for lotions. You must check the INCI name and manufacturer guidelines for every ingredient.

Check the manufacturer recommended usage rate for your preservative, such as 0.5 percent for Liquid Germall Plus.
Weigh the final product excluding container weight.
Multiply the product weight by the usage rate percentage and divide by 100 to get the required preservative weight.
Add the preservative at the very end after the mixture has cooled to room temperature, and stir it in thoroughly.

Lotions

Lotions are created by heating an oil phase and a water phase independently. You combine them to form an emulsion, whisk while cooling, and add cool-down ingredients. Small-scale making bypasses complex industrial heat-and-hold methods. Sanitation is critical. You must soak your equipment in a 5 percent bleach solution to compensate for a non-sterile home environment.

Prepare a water bath with 2 inches (5 cm) of simmering water.
Weigh 0.25 ounce (7 g) complete emulsifying wax and 0.63 ounce (18 g) grapeseed oil into a heat-resistant glass measuring cup and melt in the water bath for 10 to 15 minutes.
Weigh 2.58 ounces (72 g) just-boiled water and 0.07 ounce (2 g) vegetable glycerin into another container and whisk to dissolve.
Pour the hot water and glycerin mixture into the melted oils inside the water bath and heat through for 5 minutes.
Remove from the water bath and whisk or use an immersion blender to combine into a white cream.
Continue to whisk occasionally as it cools for about 20 minutes until the outside of the cup is cool to the touch.
Whisk in 10 to 20 drops of optional essential oil and 0.018 ounce (0.5 g) Liquid Germall Plus.
Transfer to a 4-ounce (118 mL) pump-top bottle or jar using a funnel.

Cleansers

Cleansers use the like-dissolves-like principle combined with emulsifying wax. A Creamy Cleansing Balm dissolves skin oils, dirt, and makeup while rinsing clean with water without over-drying. Because the balm is oil-based, it requires no preservatives. You must keep water out of the container to prevent bacterial and mold growth.

Prepare a water bath with 2 inches (5 cm) of simmering water.
Weigh 0.53 ounce (15 g) emulsifying wax, 0.28 ounce (8 g) coconut oil, 0.21 ounce (6 g) shea butter, 0.28 ounce (8 g) castor oil, 0.49 ounce (14 g) jojoba oil, and 0.14 ounce (4 g) candelilla wax into a heat-resistant glass measuring cup.
Melt in the water bath for about 10 minutes, stirring with a flexible silicone spatula until no solid bits remain.
Dry the outside of the cup and pour into a 2-ounce (60 mL) jar or tin.
Let set up for at least 30 minutes until solid and uniform.
To use, take a pea-size amount, add warm water in the palm to create a white creamy lather, massage into the face, and rinse.

4. Powders, Masks, and Color Cosmetics

Targeted mineral powders, clay masks, and advanced color formulations provide customized coverage, exfoliation, and long-wearing adhesion.

Synthesized mineral pigments like iron oxides, ultramarines, and micas provide safe, standardized colors without the risk of heavy metal contamination. Laboratory-synthesized versions avoid wild-harvest impurities. A starter set of red, yellow, dark brown, and black covers earthy tones and foundations. The typical price range for 1 ounce or 28 g of oxides or ultramarines is $3 to $5. This amount fills a volume of approximately ¼ cup or 60 mL.

Powders

Cosmetic powders require specific handling techniques, including dedicated blade coffee grinders, dust masks, and plastic wrap liners to maximize blending efficiency and minimize mess. You must measure powders by leveling off spoons without packing. You can use thrift shop coffee grinders from Braun and Krups for DIY projects.

Lightly scoop powders with measuring spoons and level off the top with a knife without packing them down.
Wear a dust mask to avoid inhaling fine powders.
Sandwich a piece of plastic wrap between the coffee grinder dish and the lid before pressing down.
Hold the lid tightly and smack it with the back of a spoon to knock powders down.
Scattering added oils over the surface of powders rather than clumping them helps them blend evenly.
Clean the grinder by brushing out powder, wiping with a damp paper towel, or whirring a tablespoon of rice.

A talc-free dusting powder can be made from starches and kaolin clay to prevent chafing and absorb moisture. Environment Canada classifies talc as expected to be toxic or harmful. You can use simple dusting powder in the summer to battle sticky legs under skirts and prevent chafing.

Put on a dust mask.
Measure 2 tablespoons starch (corn, arrowroot, or wheat), 2 tablespoons white kaolin clay, and 4 drops vitamin E oil into a DIY-specific coffee grinder.
Place plastic wrap over the grinder, put the lid on, and blend for 20 seconds.
Rap the lid and sides sharply with the back of a spoon, let the dust settle for at least 3 minutes, stir, and repeat blending if needed.
Transfer to a shaker-top bottle.

Masks

Clay face masks act as pore vacuums that clean skin, stimulate circulation, boost healing, and lightly exfoliate when washed off. Adding dry clay into liquids rather than liquid into clay guarantees a smooth mask paste without lumps.

Measure 2 teaspoons (10 mL) warm water or steeped green tea and ½ teaspoon (2.5 mL) raw honey into a small bowl and whisk until honey dissolves.
Slowly sprinkle in 6 to 10 teaspoons (10 to 15 g) white kaolin clay a teaspoon at a time, whisking between additions.
Whisk in 10 drops of optional essential oil and 5 drops of liquid carrier oil.
Spread over the face avoiding eyes, mouth, and nose, and let dry for about 15 minutes.
Soak a washcloth in warm water, hold to the face to hydrate, rinse off, and moisturize with argan serum.

Targeted Skin Treatments

A combination of white kaolin clay, zinc oxide, and calcium carbonate creates a targeted powder treatment that physically absorbs oil and extracts stubborn blackheads. Calcium carbonate serves as an oil absorber, while zinc oxide provides soothing and astringent properties. You can buy calcium carbonate or make it at home from discarded eggshells by baking them at 300°F (150°C) for 20 minutes and blitzing them in a coffee grinder.

Put on a dust mask to avoid inhalation during grinding.
Combine 1½ teaspoons white kaolin clay, 1 teaspoon zinc oxide, and 1½ teaspoons powdered calcium carbonate in a DIY-specific coffee grinder.
Blend for about a minute to a fine powder, and let settle for several minutes before opening.
Transfer to a wide-mouthed jar.
Dip a damp cotton ball into the powder and wipe over parts of the face with stubborn blackheads.
Let dry for about 5 minutes until tight, rinse off, and follow up with argan serum.

Eye Makeup

Silica microspheres provide exceptional oil absorption and smooth texture for eye primers, preventing makeup migration. Commercial primers use synthetic silicones, but silica microspheres act through high absorption without irritating the eyes when applied in minute amounts over a base of Essential Mineral Makeup.

Put on your dust mask.
Measure 1/8 teaspoon silica microspheres into a small sifter jar.
Apply Essential Mineral Makeup to dry, clean eyelids using a dense eye shadow brush.
Dust over the top with a tiny amount of silica microspheres using a fluffy eye shadow brush.
Wait 5 minutes for everything to set before applying eye makeup.

Xanthan gum combined with hot water forms a stable, water-based gel base that suspends powdered pigments for eyeliner. Using just-boiled water prevents the xanthan gum from clumping, creating a thick gel that can be preserved and tinted with oxides and adhesion helpers like glycerin, magnesium myristate, and castor oil.

Prepare a water bath by bringing about 1 inch of water to a steaming hot temperature.
Measure just-boiled water into a small glass or metal bowl in the water bath.
Slowly sprinkle small amounts of xanthan gum over the water, whisking vigorously between additions with a tiny wire whisk.
Whisk in the broad-spectrum preservative.

Dried gel eyeliners can be utilized like watercolor paints by wetting the brush before application. Allowing the pigmented gel eyeliner to dry completely in its container makes it easier to travel with and allows variable line strength depending on water added on the brush.

Weigh 0.03 ounce (1 g) of the gel base into a small bowl.
Top with the remaining color blend ingredients.
Whisk thoroughly with a miniature wire whisk for about 1 minute.
Transfer to a small container and leave uncapped to dry out for 2 or 3 days until solid and non-shiny.

Homemade mascara combines waxes, oils, water, clay, and iron oxide emulsified into a paste that requires a broad-spectrum preservative. Because the formula contains water, it is susceptible to microbial growth, making a preservative essential. Using BTMS-50 creates a stiff paste quickly, whereas Polawax or Emulsifying Wax NF creates a creamy lotion that thickens over days.

Prepare a water bath by bringing about 1 inch of water to a steaming hot temperature.
Measure all ingredients except the preservative into a small bowl and place in the water bath to melt for about 10 minutes.
Remove from heat, dry the outside, and use a miniature wire whisk to blend in the preservative.
Keep whisking as it cools and transfer into a container with a sealing lid.

Boron nitride acts as a key ingredient for creating velvety, highly adhesive homemade eye shadow bases. The eye shadow base blends sheer sericite mica, arrowroot starch, magnesium stearate, magnesium myristate, calcium carbonate, and boron nitride with jojoba and vitamin E oils inside a coffee grinder.

Put on a dust mask.
Measure all powdered ingredients into a cosmetics-only coffee grinder with a plastic wrap sheet between the grinder and lid.
Blend for about 20 seconds, let settle, rap the lid, and stir with a spoon to check for untouched powder beneath blades.
Scatter drops of jojoba and vitamin E oils over the powder and blend again.
Transfer the uniform powder to a jar.

Brow Wow is a thick, oil-based cream fixative that coats, darkens, and sets eyebrow hairs using melted waxes, oils, and pigments. Because magnesium stearate has a high melting point, you must melt the base directly over low heat rather than in a water bath until transparent, then combine it with pigment powders.

Weigh beeswax, jojoba oil, vitamin E, and magnesium stearate into a small saucepan.
Melt over low heat while stirring for about 10 minutes until transparent.
Measure pigments, titanium dioxide, sericite mica, and calcium carbonate into a small bowl.
Pour melted oils into the bowl with powders and blend with a flexible silicone spatula.
Pour into a container and let set up for at least 2 hours.

Eyeliners

Balancing wax amounts and adding specific adhesion-boosting powders creates a creamy eyeliner that applies smoothly and stays in place for hours without smudging. Softer eyeliners smudge quickly, while high-wax formulations are skiddy and difficult to apply. You can test your batches by wearing different formulas on each eye to check lopsided wear.

Weigh beeswax, candelilla wax, jojoba oil, castor oil, magnesium stearate, and magnesium myristate into a small saucepan.
Stir together with a silicone spatula to break up powders.
Melt over low, direct heat for about 30 minutes until clear and transparent.
Weigh 0.14 ounce (4 g) of base into a small bowl and add pigments.
Melt in a water bath for 5 minutes, stir and blend until smooth for 3 to 5 minutes.
Pour into a 0.17-ounce (5 g) jar to solidify.

Tinted Lip Balm

Replacing beeswax with plant-based candelilla wax creates a glossy, vegan-friendly lip balm base. Candelilla wax is hard and glassy, meaning you need less of it to thicken oils compared to beeswax. One batch yields 11 standard tubes holding 0.15 ounce (4.25 g) each.

Prepare a water bath with 2 inches (5 cm) of simmering water.
Weigh candelilla wax, virgin coconut oil, cocoa butter, sweet almond or safflower oil, and vitamin E into a heat-resistant glass measuring cup.
Place measuring cup in the water bath for at least 25 minutes to melt and heat the glass.
Dry the measuring cup, measure and blend in selected pigments with a silicone spatula for 2 to 3 minutes.
Stir in essential oils right before pouring.
Pour into lip balm tubes and let set for about 10 minutes.

Water-soluble root powders like alkanet can be infused into oils to dye lip balms naturally without adding gritty textures. Steeping the root powder inside a paper tea bag within the heated oils extracts a ruby hue.

Measure dried alkanet root powder into an empty disposable paper tea bag and tie it off.
Measure coconut oil, sweet almond oil, and cocoa butter into a glass measuring cup, adding an extra 0.1 ounce (3 g) of sweet almond oil to compensate for oil absorbed by the tea bag.
Place the tea bag in the oils, set in a hot water bath, and infuse for an hour.
Remove the tea bag and gently squeeze out oil with a spoon.
Weigh and add wax to the infused oil, melt for 10 minutes, add essential oils or mica if desired, and pour into tubes.

Adding granulated sugar to a lip balm recipe creates an exfoliating lip scrub in a tube. The challenge of adding sugar is managing pouring consistency so the sugar does not settle out or solidify too early.

Line up empty lip balm tubes touching each other next to the work surface.
Weigh beeswax, coconut oil, cocoa butter, sweet almond oil, and vitamin E into a measuring cup and melt in a hot water bath for 10 minutes.
Dry the measuring cup and stir in sugar and peppermint essential oil.
Stir as it cools until the sugar stays suspended, then quickly pour into tubes.
Tap tubes on the counter if needed to remove air bubbles before it solidifies.

Lip Gloss

Lip gloss achieves its glossy, viscous texture by reducing wax, omitting brittle cocoa butter, and whisking in vegetable glycerin. Vegetable glycerin is water-soluble and adds hydration and a thick texture, which requires you to whisk it into cooled room-temperature oils along with a broad-spectrum preservative.

Weigh oils and wax into a heat-resistant glass measuring cup and melt in a hot water bath for 10 minutes.
Remove, dry the outside, and let the mixture cool to room temperature for about 20 minutes until opaque.
Add vegetable glycerin and whisk vigorously until emulsified.
Whisk in a broad-spectrum preservative according to manufacturer instructions.
Add pigments and essential oils, whisking for about a minute until uniform, then fill containers using a syringe or funnel.

Carmine dissolved in water and glycerin produces a highly pigmented, long-lasting liquid lip stain. Plant-based colorants fail to provide a true, stable stain and quickly oxidize to brown. You will likely feel like winning the lottery when you first test carmine.

Measure carmine, vegetable glycerin, water, and preservative directly into a 0.17-ounce (5 g) plastic jar.
Stir gently with a toothpick for about 1 minute until smooth and uniform.

Lipstick

Lipstick requires adhesion-boosting powders and direct heat melting to incorporate high levels of pigment without becoming skiddy. Magnesium stearate and magnesium myristate improve slip and adhesion in lipstick bases. The author's long-wear lipstick formula was born from earlier eyeliner experiments that led her to wear dark eyeliner as an impromptu lipstick.

Weigh waxes, butters, oils, magnesium stearate, and magnesium myristate into a small saucepan.
Stir and blend powders into oils with a silicone spatula.
Melt over low direct heat for about 30 minutes until clear and transparent.
Weigh 0.17 ounce (5 g) of base into a small bowl, add pigments, and place in a hot water bath.
Blend with a silicone spatula for 3 to 5 minutes until streaks disappear, then pour into pots or tubes.

Lip Paint

Removing wax from liquid lip colors causes severe bleeding, which can be corrected by adding highly absorbent calcium carbonate. Early versions of lip paint crawled off the author's lips and spiderwebbed down her chin.

Measure magnesium stearate, magnesium myristate, calcium carbonate, and pigments into a 0.17-ounce (5 g) jar.
Stir powders together with a toothpick.
Add castor oil, jojoba oil, and vitamin E oil.
Gently stir and swirl oils in the center to gradually pull in powders without making a mess, mixing into a thick paste.

10 Key Ideas

Measuring ingredients by weight in ounces or grams rather than volume is essential for accuracy, especially with irregular or solid ingredients.
Tools and containers must be rinsed in a 5 percent bleach solution and allowed to dry before starting because homemade production cannot be completely sterile.
Vitamin E oil acts as an antioxidant to help delay the oxidation process in oil-based products that oxidize over time and develop a scent reminiscent of old nuts or crayons.
The minimum ratio for workable consistency in balms and salves is one part beeswax to three parts liquid oils by weight.
Broad-spectrum preservatives like Liquid Germall Plus are mandatory for lotions because antioxidants cannot prevent bacterial growth in water.
Cosmetic powders require specific handling techniques, including dedicated blade coffee grinders, dust masks, and plastic wrap liners to maximize blending efficiency and minimize mess.
Evening primrose oil is rich in linoleic acid and gamma-linoleic acid, which help reduce acne, decrease breakouts, and boost healing in acne-prone skin.
Magnesium stearate and magnesium myristate improve slip, adhesion, and performance in advanced color cosmetics like eyeshadow bases and lipsticks.
Steeping alkanet root powder inside a paper tea bag within heated oils extracts a ruby hue to dye lip balms naturally without adding gritty textures.
Making your own cosmetics gives you complete control to eliminate irritating chemicals, synthetic surfactants, and unnecessary fillers behind confusing marketing labels.

Book summary “Make it up”: summary

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