Q: Does a shower cap actually keep your hair dry?
A: Yes, provided it covers the hairline properly and the elastic sits snugly. The waterproof side is what keeps water out, so make sure that is facing outward.
Q: What is the point of a shower cap?
A: Keeping a blow-dry or style intact between washes, and protecting hair from steam. Reversed, the microfibre side turns it into a wrap for holding a hair mask in while it works.
Q: Can you use a shower cap with a hair mask?
A: Yes, and the soft side is designed for exactly that. Covering treated hair holds warmth in, which helps a mask absorb.