What It Is Our refreshing fan-favorite hydrator. Lightweight, oil-free gel-cream penetrates deep, lasts 100 hours. What It Does Many things can dehydrate your skin, including weather, pollution, blue light, time spent in the sun, mask wearing, air travel, air conditioning, and heating. Fight back against lifes daily dehydrations. This oil-free gel-cream moisturizer with Aloe Bioferment + HA Complex penetrates deep into skins surfacefor 100 hours of stabilizing hydration. Plus, Auto-Replenishing Technology helps skin create its own internal water source to continually rehydrate itself, then locks in moisture. Skin feels soothed with hydration in 3 seconds, and it keeps on glowing. Provides a smooth canvas for makeup application. For mask wearers, Moisture Surge 100H is truly a moisture marvel. Its proven to help prevent drying and barrier damage from prolonged mask wearing when applied 3x/day for 7 days (compared to masked skin without Moisture Surge 100H).