Maybe: This can thicken the keratin layer. However, i'd warn you strongly against either self-diagnosing vitamin a deficiency or accepting this diagnosis from a fringe practitioner without labs or a ready explanation. A reasonably normal diet will supply your vitamin a needs unless you have malabsorption, which is itself a serious situation. And if you have acne, start treating it scientifically.
Answered 4/17/2014
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