What should you know about Sunday Riley C.E.O. vitamin C?

Vitamin C skincare is used in routines aimed at improving the look of dull or unevenly toned skin and supporting antioxidant care. A product name does not reveal the exact vitamin C form, strength, fragrance, or other active ingredients, which can differ between versions. Read the current packaging rather than relying on a product title alone.

Topical vitamin C may cause stinging, redness, dryness, or irritation, particularly on sensitive, recently exfoliated, or broken skin. It does not replace sun protection. A dermatologist can help distinguish expected irritation from contact dermatitis or another reaction.

Patch test on a small area according to the product directions, then introduce it gradually on clean, dry, intact skin. Use a small amount and keep it away from the eyes, lips, and damaged skin. Follow with moisturiser and daytime sun protection. Add only one new active at a time so you can identify the cause if irritation appears.

Stop using it if burning, swelling, hives, or a worsening rash develops. Avoid layering it immediately with other irritating actives until you know how your skin responds. Store the product as directed and replace it if its colour, smell, or texture changes noticeably.

Seek urgent help for facial swelling, wheezing, trouble breathing, faintness, or widespread hives. Contact a clinician for persistent redness, blistering, marked peeling, or a rash that continues after stopping the product. Ask for advice before use if you have eczema, a history of contact allergy, or are treating an active facial condition.

Ask which vitamin C form and accompanying ingredients are in your version, whether it fits with your current medicines or actives, and how to patch test it. Ask what to use if irritation occurs and when it is reasonable to try again.