Skincare Ingredient Glossary

The Standard for Ingredient Transparency for Professionals

This glossary outlines key active and functional ingredients used across cosmetic formulations. Each entry includes:

  • INCI name (per EU Regulation No. 1223/2009)
  • Primary cosmetic function
  • Origin (plant-based / synthetic / biotech)
  • Usage concentration (typical range)
  • Safety & regulatory notes

Understanding and selecting effective ingredients in skincare routines is crucial for achieving optimal cosmetic results.

A

Aloe Barbadensis Leaf Juice

Soothing agent Humectant
Origin: Plant extract
Usage: 5–20%

Supports hydration and helps maintain a healthy skin barrier.

Allantoin

Skin protectant Keratolytic
Origin: Biotech-derived
Usage: 0.2–0.5%

Listed as an OTC skin protectant in EU + US. Suitable for sensitive skin.

B

Bakuchiol

Skin conditioning Antioxidant
Origin: Plant-based (Psoralea corylifolia)
Usage: 0.5–1%

Requires formulation stability support.

Betaine

Osmoprotectant Moisturizer
Origin: Sugar beet fermentation
Usage: 1–5%

Helps support barrier function and hydration balance.

C

Centella Asiatica Extract

Skin conditioning Soothing
Origin: CO2 or water extract
Usage: 0.5–2%

Contains asiaticoside; supports comfort in stressed skin.

Coco-Glucoside

Non‑ionic surfactant
Origin: Coconut + glucose
Usage: 3–10%

Ultra‑mild and biodegradable.

D

D‑Panthenol (Provitamin B5)

Moisturizer Barrier support
Origin: Biotech
Usage: 1–5%

Helps reduce visible redness and supports hydration.

E

Ectoin

Anti‑pollution Stress protection
Origin: Fermented from extremophile bacteria
Usage: 0.5–2%

Helps shield skin from oxidative and environmental stress.

G

Glycerin (Vegetable origin)

Humectant Stabilizer
Origin: Plant‑based
Usage: 2–10%

Widely used for hydration and formula stability.

Camellia Sinensis Leaf Extract (Green Tea)

Antioxidant Soothing
Origin: Water or ethanol extracted
Usage: 0.1–3%

Rich in polyphenols; supports skin comfort and firmness.

H

Sodium Hyaluronate (Hyaluronic Acid)

Hydrator Plumping effect
Origin: Fermentation‑derived
Usage: 0.01–1%

Multi‑weight forms often preferred; improves appearance of skin texture.

J

Jojoba Oil (Simmondsia Chinensis)

Emollient Lipid balancer
Origin: Cold‑pressed
Usage: 3–10%

Similar to natural sebum; supports skin elasticity.

L

Lactic Acid

AHA exfoliant Brightener
Origin: Plant fermentation
Usage: 1–10%

Requires pH balancing; promotes a smoother, brighter look.

N

Niacinamide (Vitamin B3)

Barrier booster Tone corrector
Origin: Synthetic
Usage: 2–10%

Well‑tolerated; helps reduce the look of uneven tone and shine.

R

Rosa Canina Fruit Oil (Rosehip)

Emollient Antioxidant
Origin: Cold‑pressed
Usage: 3–8%

Supports skin tone and luminosity; sensitive to oxidation.

S

Squalane (Plant‑based)

Emollient Lipid restorer
Origin: Sugarcane or olive
Usage: 1–10%

Non‑comedogenic; provides a silky skin feel.

Shea Butter (Butyrospermum Parkii)

Occlusive Nourishing
Origin: Raw/refined butter
Usage: 3–15%

Deep nourishment for dry skin; strengthens emulsions.

T

Tocopherol (Vitamin E)

Antioxidant Preservative booster
Origin: Plant oil (e.g., sunflower)
Usage: 0.1–1%

Stabilizes oils; supports skin softness.

Tea Tree Oil (Melaleuca Alternifolia)

Antimicrobial
Origin: Steam‑distilled
Usage: <1%

Use with caution; check regional allergen limits.

Z

Zinc PCA

Sebum regulator Antimicrobial
Origin: Zinc salt of PCA
Usage: 0.1–1%

Suitable for blemish‑prone skin; balances without over‑drying.