CDs are a type of carbon-based nanomaterial that has unique optical properties, including strong fluorescence and excellent photostability
It is a stronger, more treatment-oriented serum for dealing with dullness, early signs of fine lines, or uneven tone, so Id recommend introducing it slowly and pairing it with a moisturizer, adds Dr
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& Shao, Y
In human cosmetic split-face studies (n values typically 20 to 93 participants), measurable skin density and fine-line improvements appear from week 4, with most outcomes reported at 8 to 12 weeks of daily topical use