Why Vitamin C Belongs in Your Skincare Routine

Vitamin C shows up in almost every "best ingredients" list for a reason — but knowing it's good for you and knowing why (and how to actually use it) are two different things. Here's what it's doing under the surface, and how to get the most out of it.

It's an antioxidant, first and foremost

Your skin is exposed to environmental stressors all day — UV rays, pollution, blue light — that generate free radicals, unstable molecules that damage collagen and accelerate visible aging. Vitamin C neutralizes those free radicals before they can do that damage, acting as a first line of defense rather than a repair treatment after the fact.

It supports your skin's own collagen production

Beyond just defending against damage, Vitamin C is a required cofactor for collagen synthesis — meaning your skin literally cannot build new collagen efficiently without it. Over consistent use, this is part of why Vitamin C serums are associated with firmer-looking, more resilient skin over time, rather than an overnight fix.

It helps even out tone

Vitamin C inhibits an enzyme called tyrosinase, which is involved in melanin production. In practical terms, that means less new pigment formation — making it genuinely useful for fading the look of dark spots and evening out overall tone with consistent use, rather than just brightening temporarily.

How to actually use it

• Apply it in the morning. Since its main job is defending against daytime environmental stress, morning application (after cleansing, before moisturizer and SPF) is when it does the most work.
• Always follow with SPF. Vitamin C supports your skin's defenses, but it is not a replacement for sunscreen — think of them as a team, not substitutes.
• Start slow if you're new to it. Two to three times a week is a reasonable starting point for sensitive skin, building up to daily use as your skin adjusts.
• Store it properly. Vitamin C is notoriously unstable and can oxidize (turning a serum brown and less effective) when exposed to air, light, and heat. Keep the cap tightly closed and store away from direct sunlight.

What to pair it with — and what to avoid

Vitamin C plays well with Hyaluronic Acid (for hydration) and Vitamin E (which actually helps stabilize and boost its antioxidant effect). It's best to avoid layering it directly with retinol in the same routine slot, since both are potent actives — most people do best using Vitamin C in the morning and saving retinol for night.

Our Vitamin C Serum is formulated with stability in mind, so you're getting an active, effective dose every time you use it — not a bottle that's already broken down before it reaches your skin.