I actually am not a huge fan of silk - too slippery for me in generally, and i wear night oils every night so I was concerned, but wow i love this. It washes great, stays on all night shockingly and the black blocks out light better than any of my other masks - and i've tried quite a few. I've been using it for 6 months, and it's still in good shape. I got it in black and pink, haven't tried the pink yet - so cant comment on how that blocks out light... Will def be buying more for me and as gifts!!