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There are no restrictions on order quantity, parcel size, or shipment weight — every order ships at no cost to you. In addition, all customs duties, import taxes, and government-imposed fees associated with your shipment will be fully covered by us, ensuring you will not incur any extra charges upon delivery.
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We provide a secure and reliable Free Returns service for all customers. Items that remain unused and unopened may be returned within 60 days for a full refund.
All return shipping expenses, including customs-related fees, are fully covered by us.
Refund processing will be completed within 4 weeks from the date the return shipment is sent, regardless of whether the package has arrived at our facility. In general, refunds are finalized significantly earlier, ensuring a smooth and dependable experience.
IOPE's RETINOL EXPERT 0.1% is the brand's high-concentration retinol serum, positioned above the beginner-friendly innisfree retinol and below prescription retinoids. At 0.1% retinol, this is a clinically meaningful dose delivered in IOPE's encapsulated stabilization system, designed to maximize retinol penetration while minimizing degradation from air and light exposure.
0.1% retinol is a serious skincare step. It's for users who've graduated through lower-strength retinoids (0.025 to 0.05%) without issue and want visible results faster. Expect initial purging, some dryness during adjustment, and strong long-term payoff: over 12 to 16 weeks, fine lines soften, skin texture refines, and pigmentation fades. Not for sensitive or retinoid-naive skin.
Retinol at 0.1% converts in the skin to retinoic acid, which stimulates cell turnover, builds collagen, and fades pigmentation at mechanism-level. The encapsulation technology protects retinol from degradation, allowing for consistent potency throughout the bottle's life. Adjunct ingredients (peptides, antioxidants) support tolerance and amplify anti-aging results.
PM only. If graduating from lower-strength retinoid, start every other night for 2 to 4 weeks. If first retinol at any strength, start with a lower-strength product first. Apply 2 to 3 drops to clean, dry skin (wait 10 minutes after washing to reduce irritation). Follow with moisturizer. SPF mandatory in AM.
For first-time retinoid users, yes. Start at 0.025 or 0.05%. For experienced users, 0.1% is a productive graduate dose.
Possible for 4 to 8 weeks. Small congested bumps surfacing is the typical pattern. Push through consistently.
No. Contraindicated during pregnancy and nursing.
Not on the same night initially. Alternate: retinol Mondays, Wednesdays, Fridays; acid Tuesdays, Thursdays.
3 to 4 months at every-other-night use, 2 months at nightly use.
Pair with the IOPE collection or browse Korean retinol and best Korean anti-aging products.
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