"If Your Fingernails Are Feeling Weak And Brittle, A Nail Detox Might Be What You Need" an article from The List with Dr. Bruce Katz.
For starters, use nail polish remover — ideally one that's acetone-free like this jojoba-based product from Ella + Mila — and wipe away any leftover pigment. If you have gel-based or acrylic extensions, remove them with care. Because this process usually involves soaking your faux nails in acetone, aftercare is especially important. Ultimately, it isn't so much the nail polish itself that sucks moisture from the nail bed, it's the harsh removers we use in between colors. As Dr. Bruce Katz, a board-certified dermatologist, recommends to Makeup.com, "Once your nails are clean, restore moisture by soaking your fingers in warm water for 10 to 15 minutes every night." After soaking, you can move on to the next step in the detox.