@glowlab516: Pure vitamin C (L-ascorbic acid) penetrates skin best in its acidic form, which is why effective vitamin C serums are formulated at a low pH (around 2.5-3.5). At higher pH levels the molecule becomes charged, which makes it much harder to penetrate the skin barrier. This is one reason formulation matters so much with vitamin C skincare. Chemistry teacher explaining the science behind skincare. #vitaminc #skincarechemistry #chemistryteacher #PURESHINEMETHOD #GlowLab516

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Monday 16 March 2026 00:22:28 GMT