I take biotin on the daily to help boost my nutrients to give me the best nails, skin, and hair. I didn’t notice a difference over night but within a week of constant use my nails were no longer brittle. Taking care of your insides is the easy part. Now you have to take care of your outsides! I use Sally Hansen nail treatments, bases, & top coats to repair/maintain my nails. If you’ve read my “Monthly Obessessions” post from last month you remember me talking about the Sally Hansen Gel Strengthener.