Encyclopedia of Ingredients

  1. Because reading skincare labels shouldn’t feel like decoding ancient hieroglyphs.

    Or…

  2. Because reading skincare labels should be as easy as reading a café menu.

    Or…

  3. Because skincare labels shouldn’t feel like a chemistry exam

Why? Because the industry is filled with unnecessary chemicals, sneaky preservatives, and outdated synthetics that you don’t need when nature does it better.

At Number 17G, we champion transparency, education, and the power of natural ingredients. This encyclopedia is your go-to guide for understanding the myriad components found in skincare products, highlighting both synthetic and natural elements, their roles, potential downsides, and natural alternatives where applicable.

A

  • Aloe Vera – Nature’s skin whisperer. Hydrates, soothes, and heals—without needing lab-made moisturizers.

  • Alcohol (Denatured) – Found in toners but destroys your skin barrier over time. Alternative? Rose water or witch hazel.

  • Alpha Hydroxy Acids (AHAs) – Exfoliate naturally from fruit acids—unlike synthetic peels that can strip your skin.

  • Acrylates Copolymer – Used in waterproof makeup and sunscreens, but it is a microplastic sitting on your skin.

  • Argan Oil – The original anti-aging elixir, packed with fatty acids for deep hydration. No silicones needed.

  • Aminomethyl Propanol – A pH adjuster found in cosmetics, but synthetic and can irritate skin.

  • Ascorbic Acid (Vitamin C) – The ultimate glow booster. When sourced from Kakadu Plum, it is even stronger than lab-made Vitamin C.

  • Ammonium Lauryl Sulfate (ALS) – A harsh detergent found in drugstore shampoos and body washes. It strips your skin’s natural oils.

  • Avocado Oil – A luxurious, fatty acid-rich oil that deeply nourishes without clogging pores.

B

  • Beta Hydroxy Acid (BHA - Salicylic Acid) – Found naturally in willow bark, helping clear breakouts without harsh chemicals.

  • Benzoyl Peroxide – An acne-fighter, but extremely drying and irritating. Better alternative? Tea tree oil.

  • Biotin – Supports healthy hair and nails—naturally found in nuts, seeds, and avocados.

  • Butylene Glycol – A moisture booster but petroleum-derived. Plant-based glycerin works better.

  • Beeswax – Nature’s protective barrier against dryness—without the need for synthetic waxes.

  • Bismuth Oxychloride – Used in mineral makeup but can cause clogged pores and irritation.

  • Bakuchiol – A plant-based alternative to retinol that delivers anti-aging benefits without harsh side effects.

C

  • Caffeine – Found in coffee and green tea, naturally wakes up your skin and reduces puffiness.

  • Carbomers – Used to make products feel “silky,” but they are synthetic thickeners with no skincare benefits.

  • Ceramides – Essential for skin barrier repair—found naturally in oats and plant oils.

  • Cyclopentasiloxane – A silicone found in haircare and lotions that coats your skin but does not nourish it.

  • Charcoal – Absorbs toxins and excess oil without damaging the skin barrier.

  • Citronellol – Found in synthetic fragrances but can trigger allergies and irritation.

  • Citric Acid – A gentle, fruit-based exfoliant that keeps your pH balanced.

D

  • Dimethicone – That “silky” finish in lotions comes from a silicone that sits on your skin. Jojoba oil and shea butter give the same effect without blocking pores.

  • Disodium EDTA – A preservative in lotions and shampoos, but unnecessary in natural formulations.

  • DHA (Dihydroxyacetone) – The self-tanning chemical that dries out your skin. Better alternative? Antioxidant-rich oils like carrot seed and raspberry.

  • Diazolidinyl Urea – A preservative that releases formaldehyde over time.

  • D-Panthenol (Pro-Vitamin B5) – Deeply hydrates and repairs skin, naturally found in rice and honey.

E

  • Eucalyptus Oil – Naturally antibacterial and cooling, perfect for skin and scalp.

  • Ethylhexyl Methoxycinnamate – A common sunscreen ingredient but linked to hormone disruption. Zinc oxide is a better alternative.

  • Essential Oils – Natural fragrances that actually benefit your skin—unlike synthetic perfumes.

  • Ethoxylated Surfactants – Found in shampoos and cleansers, but often contaminated with carcinogens.

  • Emulsifying Wax – The natural way to blend oil and water—no need for petroleum-based thickeners.

F

  • Ferulic Acid – A powerful antioxidant that makes Vitamin C more effective—naturally found in rice bran and apples.

  • Fragrance (Parfum) – A mystery blend of chemicals that can trigger allergies, irritation, and even hormone disruption.

  • Flaxseed Oil – Rich in Omega-3s, keeping skin soft, nourished, and hydrated.

G

  • Glycerin – A hydration powerhouse—but only when it is plant-based. Many brands use synthetic glycerin from petroleum.

  • Glycol Distearate – Used in lotions and shampoos to give a “pearly” effect—but completely unnecessary for your skin.

  • Green Tea Extract – Soothes, protects, and reduces inflammation—nature’s ultimate chill pill for your skin.

H

  • Hyaluronic Acid – The ultimate hydrator, but better when derived from root vegetables instead of synthetic versions.

  • Hydroquinone – A harsh skin-bleaching agent banned in some countries. Use licorice root or niacinamide instead.

  • Honey Extract – Deeply moisturizing and antibacterial. A natural solution for dryness and acne.

I - K

  • Iron Oxides – Natural pigments used in tinted skincare.

  • Isopropyl Alcohol – Used in some skincare, but extremely drying and harsh.

  • Jojoba Oil – The closest oil to your skin’s natural sebum, making it the perfect moisturizer.

  • Kaolin Clay – A gentle detoxifier that absorbs oil without overdrying.

  • Kojic Acid – A natural brightener derived from mushrooms.

L

  • Lactic Acid – A mild exfoliator that also hydrates, found in milk and fermented foods.

  • Lanolin – A natural emollient from sheep’s wool.

  • Limonene – Found in citrus but can cause irritation in synthetic forms.

  • Licorice Root Extract – A natural brightener that evens out skin tone.

M - O

  • Mandelic Acid – A gentle exfoliator for sensitive skin.

  • Menthol – A cooling ingredient that feels fresh but can irritate sensitive skin.

  • Mineral Oil – A petroleum-based moisturizer that clogs pores.

  • Macadamia Oil – A rich, buttery oil that deeply nourishes.

  • Niacinamide (Vitamin B3) – Brightens, soothes, and evens out skin tone.

P - Z

  • Parabens – Synthetic preservatives linked to hormone disruption. Natural alternatives exist.

  • Peptides – The anti-aging proteins that keep skin firm.

  • Retinol (Vitamin A) – Fights wrinkles and acne but can be irritating.

  • Salicylic Acid – The acne-fighting, pore-clearing powerhouse.

  • Shea Butter – A creamy, nourishing skin savior.

  • Squalane – The lightweight oil that feels like liquid velvet.

  • Titanium Dioxide – A natural mineral sunscreen.

  • Tea Tree Oil – A natural antimicrobial that fights acne.

  • Zinc Oxide – A mineral SPF protector and skin soother.