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Ingredient Glossary

We believe you deserve to know exactly what goes on your skin and why. Here’s our guide to the key ingredients across the Celestret range.

Ascorbic Acid (Vitamin C)

Antioxidant

Brightens skin, fades dark spots, stimulates collagen synthesis, and protects against free radical damage.

Hyaluronic Acid

Humectant

Draws and retains moisture in the skin. Can hold up to 1,000× its weight in water, delivering intense hydration at multiple skin depths.

Niacinamide

Multi-active

Minimises pores, reduces redness, fades hyperpigmentation, strengthens the skin barrier, and regulates sebum production.

Retinol

Vitamin A

Accelerates cell turnover, smooths fine lines and wrinkles, and improves skin texture. Use at night; always pair with SPF during the day.

Peptides

Protein chains

Signal the skin to produce more collagen and elastin, firming and plumping for a more youthful appearance over time.

Squalane

Emollient

Lightweight plant-derived oil that mirrors the skin's natural sebum. Non-comedogenic, deeply nourishing, and suitable for all skin types.

Glycerin

Humectant

One of the most effective moisturising agents. Draws water to the skin surface and helps lock it in, softening and smoothing skin.

Ceramides

Barrier repair

Lipid molecules naturally present in skin. Restore and strengthen the skin barrier, preventing moisture loss and protecting against irritants.

Alpha Arbutin

Brightener

Inhibits melanin production to fade dark spots and even skin tone — a gentler alternative to hydroquinone.

Bakuchiol

Plant retinol

A natural alternative to retinol derived from the Psoralea corylifolia plant. Delivers similar anti-ageing benefits with better tolerability for sensitive skin.

Azelaic Acid

Multi-active

Treats acne, reduces redness from rosacea, fades post-inflammatory hyperpigmentation, and smooths skin texture. Suitable for sensitive and pregnant skin.

Argan Oil

Emollient

Rich in oleic and linoleic acids and Vitamin E. Deeply nourishes hair and skin, adds shine, and reduces frizz without greasiness.

Not sure which ingredients are right for you?

Take our personalised skin quiz and we’ll recommend the perfect routine.

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