What is Polyglutamic Acid? Skin Experts Break It Down
Polyglutamic Acid Is Trending, but Should You Be Adding It to Your Skincare Routine?
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Zelens Melatonin B12 Advanced Repair Serum (£105)
The key ingredients in this premium serum are melatonin and vitamin B12, chosen for their ability to renew and repair the skin. Polyglutamic acid is here in a supporting role, adding extra moisture into the mix so that the skin can function at its best.