Vitamin C is a morning antioxidant that brightens skin, fades dark spots, and adds a layer of protection against daily free-radical damage. The catch is that not all "vitamin C" is the same.
L-ascorbic acid vs derivatives
- L-ascorbic acid is the most studied and potent form — but it's acidic, can sting, and oxidises (goes orange) over time.
- Derivatives (sodium ascorbyl phosphate, ethyl ascorbic acid, THD ascorbate) are more stable and gentler, at the cost of some potency. Better for sensitive or reactive skin.
How to use it
- Apply in the morning, before moisturiser and sunscreen.
- Pair it with SPF — vitamin C and sunscreen are a classic protective duo.
- Don't layer it with exfoliating acids in the same routine (two low-pH actives can destabilise and irritate) — keep acids for the evening. The conflict checker will flag this for you.
Vitamin C is a cornerstone for hyperpigmentation and aging concerns.