Crest 3D Whitestrips Professional Effects + Supreme Bright — Dual Pack Whitening Kit, 20 Professional Strips + 10 Brightening Strips (Hydrogen Peroxide, At-Home Treatment)

Whitestrips work fundamentally differently from whitening toothpastes. Each strip is a thin, flexible piece coated with a Hydrogen Peroxide gel — you apply one strip to your upper teeth and one to your lower teeth, leave them on for 30-60 minutes depending on the variant, then remove. The peroxide oxidizes stain molecules INSIDE the tooth, not just on the surface. Results are significantly more pronounced than any whitening toothpaste.

This dual pack provides a complete cycle: the 20 Professional Effects strips (10 days × 2 strips/day) deliver the main whitening treatment, and the 10 Supreme Bright strips (5 touch-up sessions) maintain results 2-3 weeks after the main cycle. Korean retail price for similar Crest Whitestrips products is significantly higher — direct import provides real cost savings. Single most-requested US oral care import on Korean parenting and beauty forums.

1. Brush teeth gently before applying (do not floss right before — wait at least 30 minutes after flossing).
2. Pat front teeth dry with a paper towel.
3. Peel one strip from backing; apply the longer strip to upper teeth, shorter strip to lower teeth.
4. Press strips firmly against teeth so they stay in place. Fold any excess strip behind teeth.
5. Leave on for 30-60 minutes (check specific timing on the product packaging for each strip type).
6. Remove strips, discard, and rinse mouth thoroughly. Do NOT brush teeth for 30 minutes after.
7. Use 2 strips per day (1 upper, 1 lower) for the prescribed treatment length.
8. Do NOT use more than recommended; do NOT use if you have dental work that includes crowns or veneers on front teeth (whitening will not work on these).

Crest 3D Whitestrips are the gold standard for at-home teeth whitening in the US. Korean dental whitening procedures cost ~₩300,000-₩600,000 per session at clinics, with multiple sessions often needed. Whitestrips deliver comparable results at home for under ₩150,000 total — a massive cost savings that's driven significant import demand.

Korean shoppers also import Whitestrips because they're rarely sold through Korean retail (regulatory restrictions on consumer-grade Hydrogen Peroxide products limit local distribution). This dual-pack format isn't available in Korean retail at all — direct import is the only access path.

Free shipping to Korea — included in the listed price.

Shipped from the United States in secure protective packaging.

Orders dispatched within 1-2 business days. Tracking number sent to your email once your parcel is on its way.

All orders are processed as personal-use overseas purchases and clear Korean customs without requiring KC certification. Your shipment is handled using your Personal Customs Clearance Code (PCCC) and is trackable via Korea Customs Service UNI-PASS. Orders under USD 200 from the United States qualify for duty-free clearance.

We source directly from US retail and ship to Korea — no middlemen, no re-bottling, no extended storage in Asia warehouses. Every product is a fresh US production lot, sealed in original retail packaging.

Free shipping is built into the listed price — what you see is what you pay.

1. Select the product
2. Add to cart and proceed to checkout
3. Enter your Personal Customs Clearance Code (PCCC)
4. Confirm your Korean delivery address
5. Complete payment — your order is placed
6. Receive your tracking number by email within 1-2 business days