Skincare & Haircare Ingredient Glossary A–Z

Skincare ingredient glossary A to Z — Celaura Beauty

This A–Z glossary explains the most common skincare and haircare ingredients on US labels — what each is and how it’s typically used, in plain language. Each links to the matching collection at Celaura Beauty, shipped across the USA in USD.

Azelaic Acid

Azelaic Acid is a naturally occurring dicarboxylic acid commonly used in skincare products for its exfoliating properties and ability to promote a more even skin tone.

Bakuchiol

Bakuchiol is a plant-derived ingredient often referred to as a natural alternative to retinol, used in cosmetics for its anti-aging benefits and to improve the appearance of skin texture. Shop Bakuchiol »

Batana Oil

Batana Oil is a nourishing oil derived from the American palm tree, commonly used in haircare products for its moisturizing properties and ability to enhance shine. Shop Batana Oil »

Ceramides

Ceramides are lipid molecules that help to restore and maintain the skin's natural barrier, commonly found in moisturizers to improve hydration and skin texture.

Collagen

Collagen is a protein that provides structure and elasticity to the skin, often included in skincare products to help promote a youthful appearance. Shop Collagen »

Glycolic Acid

Glycolic Acid is an alpha hydroxy acid (AHA) derived from sugar cane, commonly used in exfoliating products to help remove dead skin cells and improve skin texture. Shop Glycolic Acid »

Hyaluronic Acid

Hyaluronic Acid is a powerful humectant that draws moisture to the skin, commonly used in serums and moisturizers for its hydrating properties. Shop Hyaluronic Acid »

Lactic Acid

Lactic Acid is an alpha hydroxy acid (AHA) derived from milk, commonly used in skincare products for its gentle exfoliating properties and ability to improve skin tone.

Minoxidil

Minoxidil is an over-the-counter topical hair product used to promote hair growth; please follow the label directions for use. Shop Minoxidil »

Niacinamide

Niacinamide is a form of vitamin B3 commonly used in skincare products to help improve skin texture and enhance radiance. Shop Niacinamide »

Peptides

Peptides are short chains of amino acids that can help support skin structure, commonly found in anti-aging products to promote a smoother appearance. Shop Peptides »

Retinol

Retinol is a derivative of vitamin A commonly used in skincare products to promote cell turnover and improve the appearance of fine lines; please follow the label directions for use. Shop Retinol »

Rosemary Oil

Rosemary Oil is an essential oil derived from rosemary leaves, commonly used in haircare products for its invigorating scent and potential to enhance scalp health. Shop Rosemary Oil »

Salicylic Acid (BHA)

Salicylic Acid is a beta hydroxy acid (BHA) commonly used in skincare products for its exfoliating properties and ability to help clear pores. Shop Salicylic Acid »

Snail Mucin

Snail Mucin is a secretion obtained from snails, commonly used in skincare products for its hydrating and soothing properties. Shop Snail Mucin »

Squalane

Squalane is a lightweight oil derived from squalene, commonly used in moisturizers for its hydrating and skin-softening benefits.

Vitamin C

Vitamin C is a powerful antioxidant commonly found in skincare products to help brighten the skin and improve overall radiance. Shop Vitamin C »

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Product information is provided for general reference only. Always read and follow the directions, warnings and ingredient list on the product packaging. For any treatment product, consult a pharmacist or healthcare professional if you are unsure.