How to Use Vitamin C Serum on Your Face?

Choosing a Korean vitamin C product starts with two questions: which formula are you comparing, and do you want a serum or a moisturizer? A product’s name or fruit-extract percentage alone does not tell you its pure vitamin C concentration.

Compare two options at Yugen Beauty

Goodal Green Tangerine Vita C Dark Spot Care Serum

Goodal Green Tangerine Vita C Serum is a serum. The ingredient list on our listing includes tangerine extract, niacinamide, arbutin and Ascorbyl Glucoside. It also lists aromatic plant oils, including bergamot, lemon and lavender oils. Check these against your preferences rather than assuming every vitamin C product has the same formula.

Medicube Deep Vita C Capsule Cream

Medicube Deep Vita C Capsule Cream is a moisturizer combining capsules with a gel texture. Its listing includes niacinamide and several vitamin C forms, including Sodium Ascorbyl Phosphate and Ascorbyl Glucoside. Fragrance is listed. Choose this format when you are comparing the moisturizing step, rather than treating it as another serum.

How should I read vitamin C ingredient names?

Ascorbic Acid and names such as Ascorbyl Glucoside, Sodium Ascorbyl Phosphate and Ascorbyl Palmitate refer to different forms used in formulas. An ingredient list can establish what is listed; it cannot establish the performance or concentration of every ingredient. Compare the complete formula and the label of the product you will receive.

What percentage should I choose?

Do not equate a percentage of tangerine extract with the same percentage of pure vitamin C. The formulas above are not ranked by a verified active-vitamin-C percentage here. A higher number on a different formula is not enough to make a direct comparison.

Where does the product fit in my routine?

1. Start with your cleansing step.
2. If you choose a serum, use the amount and application method on its own directions.
3. Follow your moisturizer’s instructions. A cream already occupies that step.
4. For daytime use, apply sunscreen according to its label. A vitamin C product does not replace sunscreen.

Can I use vitamin C with niacinamide?

Both of the listed products contain niacinamide alongside vitamin C forms. This shows they can appear in the same formulated product; it does not mean every combination of separate bottles suits every person. Start with one new product and follow its directions rather than mixing several active products together.

Will it remove dark spots or acne scars?

Yugen Beauty does not promise scar removal or a fixed timeline for changing pigmentation. A cosmetic product comparison is not a diagnosis. Persistent or changing marks deserve individualized advice from a dermatologist.

Build your selection

Prefer a serum? Compare our serum formulas. Need a cream? Browse moisturizers. Start with one format that fills a gap in your routine; you do not need both of these products to begin.

For the overall order, read the Korean skincare routine guide. For general sun-protection guidance, see the American Academy of Dermatology.