Antioxidant
A water-soluble antioxidant; L-ascorbic acid is the active, research-backed form.
Neutralizes free radicals from UV/pollution, supports collagen, and helps brighten the look of uneven tone.
Morning serums, usually 10–20%; stable formulas matter (air and light degrade it).
Most skin types wanting brightness and antioxidant protection; sensitive skin may prefer gentler derivatives.
L-ascorbic can sting sensitive skin; derivatives (e.g., sodium ascorbyl phosphate) are gentler. Store away from light/air.
It does not replace sunscreen — it complements it.
Often paired with vitamin E and ferulic for stability; can irritate when layered with acids in sensitive skin.
Explain as a morning 'shield' against environmental stress — not a bleaching agent.