I love this brand! I have always had thin nails but recently it has gotten so bad. I am sure it’s all the medication I take. I take biotin and collagen not sure if it is helping. Since I have been using their treatment products my nails have made an improvement. The photo of my nails is about 5 days. When I use their products under my nail polish my nails feel very strong and i have little chipping or breaking as long as I keep it on. I haven’t used any of their nail colors but what I’ve tried I love.