Q: How often should I use it per week? A: Once a week is ideal. If you have dry skin or live in a dry climate, use it 2–3 times a week. Q: How long should I leave it on? A: For optimal results, leave it on for 3 to 8 hours. If you're short on time, keep it on for at least 40 minutes. Q: Where does this fit in my skincare routine? A: Apply it after the last step of your nighttime skincare routine. If your routine includes many active ingredients, use it after simple cleansing and toning. Q: Will leaving it on for a long time irritate my skin? A: Our dermatologist-evaluated masks are hypoallergenic and gentle, even on sensitive skin. LAPCOS Glutathione Radiance Rescue Mask - Korean Skin Care Mask w/Glutathione... LAPCOS Retinal Resurfacing Mask - Korean Skin Care Mask w/Retinal, Hyaluronic... LAPCOS Collagen Sheet Mask, Firming Daily Face Mask with Collagen Peptides fo... LAPCOS Honey Sheet Mask, Daily Face Mask with Hyaluronic Acid and Antioxidant... LAPCOS Aqua Sheet Mask, Hydrating Daily Face Mask with Seawater and Plankton ... Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.8 out of 5 stars 170 4.8 out of 5 stars 170 4.5 out of 5 stars 6,650 4.5 out of 5 stars 6,650 4.5 out of 5 stars 6,650 Price $20.70 $ 20 . 70 $24.00 $ 24 . 00 $19.49 $ 19 . 49 $17.53 $ 17 . 53 $20.00 $ 20 . 00 Ingredients Glutathione, Peptides Retinal, Blue Agave Collagen. Peptide Honey, Hyaluronic Acids Deep Sea Water, Algae Benefits Evens Out Skin Tone Rejuvenates Skin Restores Bouncy Elasticity Quick and Lasting Moisture Strengthens Moisture Barrier Skin Concern Discoloration Pores, Fine Lines Mature Skin Sensitive Skin Dry & Dehydrated Skin Sheet Material Bamboo PT Cell Sheet Bamboo PT Cell Sheet Bamboo PT Cell Sheet Lyocell Sheet Cupra-Rayon Sheet Mask Cruelty-Free ✓ ✓ ✓ ✓ ✓