Dear Dr. Roach: I have a serious problem with my fingernails splitting and coming off at the edges. I have tried biotin and keratin for almost a year without results. I am an 89-year-old man who takes ...
If too many gel manis ruined your nails, raise your hand. 🙋 ...
“A strengthening treatment or base coat containing ingredients like keratin, biotin or calcium can also help reinforce the ...
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