A Korean post-acne sheet mask inspired by Dr. Althea's bestselling 345 Relief Cream — the same formula now delivered in a single-use vegan cellulose sheet mask. The "345" name is a formula key: 3 blemish-relief ingredients, 4 nourishing ingredients and 5 soothing ingredients work together to calm breakout-stressed skin, restore hydration and strengthen the barrier in one 15-minute treatment. Built on a 30% tea tree leaf water base for continuous calming action throughout the wear. Fragrance-free, paraben-free, non-comedogenic. Sold at Ulta. Box of 4 masks.

• 3 Blemish-Relief Ingredients: Niacinamide + Tea Tree Leaf Water 30% + Resveratrol — niacinamide (2%) fades post-acne marks and prevents new pigmentation; tea tree leaf water at 30% (the second ingredient — an unusually high concentration) delivers continuous antibacterial and anti-inflammatory action throughout the mask; resveratrol is a potent antioxidant that protects against environmental stress that worsens post-acne marks
• 4 Nourishing Ingredients: Panthenol + Ceramide NP + Dual Hyaluronic Acid + Beta-Glucan — panthenol (pro-vitamin B5) strengthens the skin barrier and locks in moisture; ceramide NP rebuilds the lipid barrier that breakouts disrupt; sodium hyaluronate and hydrolyzed HA hydrate at surface and deeper levels; beta-glucan soothes and provides anti-inflammatory hydration
• 5 Soothing Ingredients: Green Tea Leaf Water + Tea Tree Leaf Water + Centella Leaf Water + Madecassoside + Sodium DNA (PDRN) — three botanical waters provide continuous layered calming action; madecassoside is the most potent isolated centella active for redness reduction; sodium DNA (PDRN) supports skin cell renewal and recovery — the same ingredient class found in Rejuran clinic treatments
• Triple Centella Complex — centella asiatica leaf water + centella asiatica extract + madecassoside; all three forms of centella active together provide full-spectrum barrier repair, redness reduction and collagen support
• Vegan Cellulose Sheet — plant-derived cellulose material that adheres tightly to all face contours, ensuring the cream-textured essence is delivered evenly with no waste; more sustainable than synthetic fiber sheets

Cleanse and tone. Unfold the sheet mask and apply evenly over the face. Leave on for 10–15 minutes, then remove and pat remaining essence into skin. Do not rinse. Use 2–3 times per week or whenever skin is stressed after breakouts. Box of 4 masks.

Korean skincare at Olive Kollection since 2018 — free shipping on orders over $40.