What should you know about Dermalogica vitamin C?

Vitamin C, also called L-ascorbic acid in some formulas, is applied to the skin rather than taken as a supplement. It can help limit oxidative stress from everyday environmental exposure and support a fresher-looking complexion. It may be useful for dullness and uneven tone, but it does not replace sunscreen or treat every cause of pigmentation. Formula strength, acidity, packaging and storage affect how well a product stays usable.

Follow the product directions and begin on clean, dry skin at a frequency your skin tolerates. Apply a small amount, keep it away from the eyes and combine daytime use with broad-spectrum sunscreen. Avoid adding several strong exfoliants or retinoids at the same time when you are starting. Stop and reassess if burning, marked redness or a persistent rash develops. A clinician can help choose a gentler option if your skin is sensitive or you have an active flare.

Seek medical advice for swelling, blistering, intense pain, eye symptoms or a rash that continues after stopping the product. New, changing or bleeding pigmented marks need assessment rather than cosmetic treatment. A dermatologist can also review persistent dark patches, because their cause may require a different plan.

Ask whether vitamin C suits your skin condition, which formulation and frequency are reasonable, and whether it can be used alongside your current acne, pigment or anti-ageing products.