This vitamin C serum brightened my skin, evened tone, and worked perfectly with my resilient skincare routine!
I use this vitamin C serum with glycolic acid and tretinoin—my ultra-resilient skin glows brighter, stays even-toned, and handles the strong formula effortlessly. Worth the odd smell!
This is a review of product:
COSRX Pure Vitamin C 23% Serum with Vitamin E & Hyaluronic Acid, Brightening & Hydrating Facial Serum for Fine Lines, Uneven Skin Tone & Dull Skin, 0.7oz/20g, Korean Skin Care
From Amazon.com
My skincare routine:
1. Double wash, first with micellar water then with water-based cleanser.
2. Microneedling 2-3x a week
3. 12% glycolic acid toner
4. COSRX Vitamin C serum
5. 0.14% tretinoin cream
6. 8% hydroquinone cream
7. Ceramide moisturizer
8. Sunscreen, mornings
This is NOT for everybody. My skin is ultra-resilient and nothing ever irritates it. The Vitamin C serum really stinks, but it’s worth it. My skin is noticeably brighter and more even. Highly recommended!
Vitamin Basics & Tips
Skincare Routine Breakdown & Vitamin C Insights
Double Cleansing: Micellar water removes makeup/sunscreen, followed by a water-based cleanser to clear pores. Ideal for prepping skin for actives like vitamin C.
Microneedling: Enhances product absorption. Avoid combining with vitamin C immediately post-treatment to prevent irritation.
Glycolic Acid (12%): An AHA that exfoliates, boosts cell turnover, and complements vitamin C's brightening effects. Use cautiously to avoid over-exfoliation.
Vitamin C Serum (L-ascorbic acid): A potent antioxidant that fights free radicals, boosts collagen, and reduces hyperpigmentation. Stability varies—store in cool, dark places.
Tretinoin (0.14%): A retinoid that accelerates cell renewal. Pairing with vitamin C may enhance anti-aging benefits but requires robust skin tolerance.
Hydroquinone (8%): Targets stubborn pigmentation. Use cyclically (4-6 weeks) and avoid combining with vitamin C in the same routine to prevent irritation.
Ceramides & Sunscreen: Ceramide moisturizers strengthen the skin barrier, while sunscreen (SPF 30+) is non-negotiable—vitamin C increases sun sensitivity.
Vitamin C FAQs & Tips
Why does vitamin C serum smell? Oxidation causes a metallic/iron-like odor. Air-tight packaging and refrigeration slow this process.
Best time to apply: Morning (under sunscreen) boosts UV protection. Night use aids repair. Avoid layering with niacinamide or benzoyl peroxide unless formulated together.
For sensitive skin: Opt for gentler derivatives like sodium ascorbyl phosphate or tetrahexydecyl ascorbate.
Shelf life: 3-6 months. Discard if serum turns dark yellow/brown.
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