With the skincare landscape constantly evolving, it can be challenging to keep up with the language surrounding new formulations, ingredient trends, and marketing positioning. For brand owners, understanding these terms is essential for communicating clearly with customers and differentiating in a competitive market.
This skincare dictionary brings together both timeless fundamentals and emerging terminology to help you navigate the industry with confidence.
A–Z Skincare Dictionary
A
Active Ingredient
A component in a formulation responsible for delivering a specific skin benefit, such as exfoliation, brightening, or hydration.
Browse by Benefit: Exfoliating Collection | Brightening Collection | Hydrating Collection
Adaptogens
Plant-derived ingredients believed to help the skin adapt to environmental stressors while supporting balance and resilience.
B
Bakuchiol
A plant-based alternative to retinol known for supporting smoother, firmer-looking skin with less irritation.
See our ingredient glossary entry for all of the details on bakuchiol.
Barrier Repair
Formulations designed to strengthen the skin’s natural moisture barrier, often using lipids, ceramides, and fatty acids.
C
Ceramides
Lipids naturally found in the skin that help retain moisture and protect against environmental stress.
Clean Beauty
A broad term typically referring to formulations made without certain controversial or unwanted ingredients. Definitions vary by brand and retailer. View our standards here.
Clinical Skincare
Products positioned around performance, often supported by testing, data, or dermatologist-aligned claims.
D
Dermatologist-Tested
Indicates a product has undergone testing under dermatological supervision. Does not necessarily imply approval or endorsement.
Double Cleansing
A two-step cleansing method using an oil-based cleanser followed by a water-based cleanser to remove impurities and buildup.
E
Emollients
Ingredients that soften and smooth the skin by filling in gaps between skin cells.
Exfoliation
The process of removing dead skin cells, either chemically (AHAs, BHAs, enzymes) or physically (scrubs).
F
Free-From
A marketing term highlighting the absence of specific ingredients (e.g., “paraben-free”). Should be used carefully to avoid misleading claims.
Functional Fragrance
Fragrance designed not only for scent, but also to support mood or sensory experience (e.g., calming, energizing).
G
Glass Skin
A trend-focused term describing skin that appears exceptionally smooth, luminous, and hydrated.
H
Hyaluronic Acid
A humectant that attracts and retains moisture, helping skin appear plump and hydrated.
Hydration vs. Moisture
Hydration refers to water content in the skin, while moisture refers to sealing that hydration with oils or occlusives.
K
K-Beauty
Refers to skincare innovations and trends originating from South Korea, often emphasizing layering and hydration.
L
Lipid Barrier
The outermost layer of the skin that protects against moisture loss and environmental damage.
M
Microbiome Skincare
Products formulated to support the skin’s natural ecosystem of beneficial bacteria.
Multi-Functional Products
Formulations designed to deliver multiple benefits in one step, such as moisturizing, brightening, and protecting.
N
Non-Comedogenic
Formulated to minimize the likelihood of clogging pores.
O
Occlusives
Ingredients that create a barrier on the skin to prevent water loss, such as petrolatum, waxes, and certain oils.
P
Peptides
Short chains of amino acids that help support the appearance of firmer, more youthful-looking skin.
pH-Balanced
Formulated to match the skin’s natural pH level, helping maintain barrier function.
Private Label Skincare
Pre-developed formulations that brands can customize and sell under their own branding.
R
Retinol
A vitamin A derivative known for supporting cell turnover and improving the appearance of fine lines and uneven texture.
S
Skin Cycling
A trending routine that alternates active ingredients (like exfoliants and retinoids) with recovery days.
Sustainable Packaging
Packaging designed to reduce environmental impact, including recyclable, refillable, or reduced-material formats.
T
Transparency (in Skincare)
Clear communication about ingredients and formulation practices.
Trend-Led Formulation
Products developed to align with current market demand, such as “barrier repair,” “blue light protection,” or “microbiome support.”
Understanding these terms empowers you to make informed decisions when developing your skincare line, positioning your brand, and communicating with your customers. As trends continue to evolve, staying fluent in the language of skincare ensures your brand remains relevant, credible, and competitive.
