Vitamin C that sensitive skin can actually wear. RUDDI uses 5% sodium ascorbyl phosphate — a stable, gentle vitamin C derivative — rather than the L-ascorbic acid that gives brighter results on paper and stings on reactive skin in practice. It sits in a barrier-focused base of glycosphingolipids and ceramide-supporting lipids, with palmitoyl pentapeptide-4, sodium hyaluronate and beta-glucan, plus chamomile, green tea and olive leaf.

The trade-off is deliberate. This is a formula for people who have tried a 15% or 20% vitamin C serum, found it uncomfortable, and given up on the ingredient entirely. Fifteen ingredients, no fragrance.

Use it in the morning under sunscreen for brightness and an evener-looking finish, or at night if your routine is already crowded in the morning. It plays well with almost everything.