You bought a Vitamin C serum. It looked clear and golden. Two weeks later, itโs turned brown, smells weird, and suddenly your glow is gone. Sound familiar?
This is the #1 frustration mindful buyers share: โIs my Vitamin C even working?โ
The truth: most Vitamin C serums fail because of instability. Hereโs what you need to know in 2025.
The perfect Vitamin C formula is about balance:
Q1. Why does my serum turn brown? Thatโs oxidation = itโs lost its power.
Q2. How long should Vitamin C last? 3โ6 months in stable packaging.
Q3. What % works best? 10% is safe, effective, and clinically proven.
A mindful buyer doesnโt get carried away by glossy ads or quick-fix promises. You look deeper, you want real science, tested results, and products that genuinely work for your skin and hair.
Each blog cuts through the noise and gives you straight answers, so you can make choices with confidence, not confusion.
Other blogs in the series:

From glowing testimonials to thousands of positive reviews, the verdict is clear: Foley, a Surat-based skincare brand delivers what it claims.
Every product is:
Connect with Foley Fam, however you wish, you beautiful beautiful soul:
๐ Website: https://foleyskincare.com/
๐บ YouTube: https://www.youtube.com/@FoleySkincare/
๐ธ Instagram: https://www.instagram.com/foley_skincare
๐ Pinterest: https://in.pinterest.com/foleyskincare