Review (1/5): DO NOT BUY better product by another seller in my review
I ordered three of these for xmas. One for myself due to dry eyes and the other for my daughters. I used mine and the mask heated up nicely. The heating unit turned off in about 10 minutes. I tried to turn the mask on (instructions in Chinese) and the 'on' light didn't turn on and neither did the mask. I tried to turn the mask on the next day and it DIDN'T. I sent a message to the seller and never heard any response for a refund/replacement. Meanwhile I purchased
EYEHELP Heated Eye Mask with USB Temperature Control and Timing Eyeshade Lavender Flavor Scented Silk Night Sleeping Hot Steam Eye Cover (Gray)
Sold by: XSHINEE
$24.99
And it works like a champ better made and easy instructions. Steer clear of this seller.