VITAMIN C

Yes, but apply them at different times of day for best results. Use Vitamin C in the morning to brighten, even tone, and defend against environmental aggressors, then use Retinol at night for cell turnover. Combining them could increase irritation, so alternating AM/PM is gentler and more effective.

Morning is ideal. Vitamin C is an antioxidant, so it performs best paired with SPF to help neutralize free radicals from UV rays. Applied under sunscreen, it helps visibly brighten and even skin tone.

It is helpful to incorporate Vitamin C in your skincare routine if you want to visibly fade dark spots and brighten your complexion for an overall more even skin tone.

Vitamin C skin benefits include visibly fading dark spots and brightening dull skin for a more radiant complexion thanks to its powerful antioxidant properties. 

You should avoid layering Alpha Hydroxy Acids (AHAs) and Beta Hydroxy Acids (BHAs) with Vitamin C if your skin is on the sensitive side. If so, use at another time of day or a different day entirely. As with introducing any new skincare product or active ingredient, we recommend performing a patch test on a small amount to an area of skin (such as the inner forearm).

Pure L-ascorbic acid oxidizes quickly when exposed to air and light, turning brown and losing effectiveness before you finish the bottle. Stabilized Vitamin C derivatives, like those used in innisfree's formulas, stay potent longer and are gentler on sensitive skin.

Yes, when formulated thoughtfully. Lower concentrations and stabilized derivatives are well-tolerated by most sensitive skin types. Patch-test first, introduce it 2–3 times per week, and pair with hydrating, barrier-supporting products. Avoid layering with strong exfoliants like AHAs or BHAs on the same day.