How the Know Beauty Bubbling Oxygen Mask Works As soon as the Know Beauty Bubbling Oxygen Mask ($22) makes contact with your skin, it starts to bubble up. You can't take your time to apply it — you have to work fast! I quickly spread a thin layer all over my face and watched the gold sparkles turn into hundreds of tiny bubbles. Image Source: POPSUGAR Photography / Anvita Reddy Know Beauty Bubbling Oxygen Mask $22 from knowbeauty.com Buy Now