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OPI Nail Envy Original Nail Strengthener — Clear Strengthening Treatment (15 mL, NTT80)

OPI Nail Envy Original Nail Strengthener — Clear Strengthening Treatment (15 mL, NTT80)

₩19,000 KRW
₩19,000 KRW
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OPI's iconic clear nail strengthener — the original Nail Envy that defines the brand's professional treatment line. Vegan 9-free formula with Tri-Flex Technology. 95% stronger nails in one week of consistent use.

About This Product
Direct from USPersonal Import15 mL9-FreeVeganMade in USA
Weak nailsPeelingChippingSplittingGel damage recoverySlow growth

Nail Envy Original is the product that built OPI's treatment reputation. Launched in 1989, it remains the most-recommended at-home nail strengthener by US nail technicians. The current formulation — reformulated 2023 with Tri-Flex Technology — combines hydrolyzed wheat protein and calcium with biotin and vitamins A, C, and E to build measurable nail strength in seven days of consistent use.

The product works as both a standalone treatment and as a strengthening base coat under nail color. Apply two coats to bare nails, refresh with one coat daily, remove on day seven, repeat. The 95% strength improvement figure comes from OPI's in-house clinical testing with 108 consumers over a one-week protocol — a meaningful claim because the methodology is published, not marketing language.

Product Details
BrandOPI (Wella Company)
Sub-lineNail Envy Original — Tri-Flex Technology
FormatClear strengthening base coat / treatment
Net Volume15 mL / 0.5 fl oz
Drying Time60-90 seconds per coat
Wear Cycle7 days (refresh daily, remove on day 7)
Lasts Approx.~6-8 weeks per bottle at typical use
Formulation9-free, vegan, cruelty-free
Country of OriginUSA
StorageCool, upright. Avoid direct sunlight.
Key Ingredients & Free-Of Profile

Nail Envy Original combines two strengthening systems — a protein bonding complex and a vitamin nourishing complex — in a 9-free vegan formulation.

Strengthening ComplexHydrolyzed wheat protein, calcium, ProSina (proprietary protein matrix)
Nourishing ActivesBiotin, vitamins A, C, and E
Vegan StatusNo animal-derived ingredients or by-products
9-Free FormulationFree of the 9 chemicals listed below

This product is formulated WITHOUT:

  • Formaldehyde
  • Formaldehyde resin
  • Toluene
  • Xylene
  • Dibutyl phthalate (DBP)
  • Camphor
  • Parabens
  • Ethyl tosylamide
  • Triphenyl phosphate (TPHP)
The 9-free standard removes most of the chemicals historically flagged in nail polish health studies. For Korean shoppers who scrutinize ingredient lists, this is OPI's most rigorous formulation tier.
How to Use
  1. Start with clean, dry, polish-free nails. Push back cuticles gently with an orange wood stick.
  2. Apply 2 thin coats of Nail Envy to bare nails, allowing 60-90 seconds between coats.
  3. For the next 6 days, apply 1 fresh coat daily on top of the existing layers — this is the "building" phase.
  4. On day 7, remove all Nail Envy with OPI Expert Touch Lacquer Remover (or any acetone-based remover).
  5. Repeat the 7-day cycle continuously for ongoing maintenance.
  6. Can also be used as a strengthening base coat: apply 1 coat before your favorite OPI Nail Lacquer color.
  7. Pair with daily cuticle oil application for a complete nail-health routine.
Tips From Pro Nail Artists
The 7-day cycle is the key to results — don't skip the daily refresh, and don't extend beyond 7 days. Layering without removal causes peeling that defeats the strengthening effect. US nail technicians who specialize in gel-damage recovery typically pair Nail Envy with weekly cuticle oil treatment for clients whose nails have been weakened by frequent gel manicures.
Apply thin coats, not thick. Two thin coats build stronger layers than one thick one, and the bottle lasts noticeably longer. If the formula has thickened over time, OPI Nail Lacquer Thinner (NTT01) restores the consistency — never use water or remover to thin it.
Pairs Well With
Apply directly toBare, polish-free nails. Nail Envy is a base treatment — not designed to layer over existing polish or gel.
Layer withAny OPI Nail Lacquer color (Nail Envy doubles as a strengthening base coat under polish).
Seal withOPI Top Coat for classic gloss, Matte Top Coat for matte finish, Mirror Shine for high-shine, or RapiDry Top Coat for fast drying.
Remove withOPI Expert Touch Lacquer Remover (110 mL or 480 mL) — acetone-based for clean removal.
Pair daily withOPI ProSpa Nail & Cuticle Oil (14.8 mL dropper) at home, or the 7.3 mL To Go pen for purse/work bag.
Why Korean Customers Reach For This

OPI Nail Envy is widely available in Korea, but the US version offers a specific advantage: formulation timing. US OPI typically releases reformulations 6-12 months before Korean distribution catches up, so the current Tri-Flex Technology vegan formula has been on US shelves longer than in Korean retail. For Korean shoppers who follow OPI launches closely, the US version is the way to access the newest formula first.

The 9-free, vegan formulation also resonates with Korean shoppers who research nail-care ingredient safety. Korean nail-care communities actively discuss formaldehyde-free and TPHP-free polishes — Nail Envy Original meets every standard cited in those conversations. For Korean shoppers recovering from gel manicure damage, the 7-day cycle has become a recommended at-home recovery protocol that requires a clean treatment formula like this one.

Shipping

Free shipping on every order, with no minimum. No handling fees, no customs processing charges, nothing added at checkout.

Orders are dispatched within 1 to 2 business days. A tracking number is sent to your email once your parcel is on its way. International transit to Korea typically takes 7 to 14 days depending on customs clearance.

All orders ship in plain unmarked boxes for discretion.
Customs & Import

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. Personal-use imports from the United States with a declared value under USD 200 generally qualify for duty-free clearance; if any duty applies, it is payable by the customer at the time of receipt.

If you do not yet have a PCCC, you can get one free in under five minutes at unipass.customs.go.kr.
About Us

We work directly with US professional nail-supply distribution — the same channels US salons buy from. Every bottle is factory-sealed direct from OPI's US production, never re-bottled or repackaged, never grey-market sourced.

OPI is a US professional nail-care brand founded in 1981 and now owned by Wella Company. OPI is the most-recognized professional nail brand worldwide, sold through salon-supply distribution and select beauty retail. The treatment line — Nail Envy, Repair Mode, Natural Nail Strengthener, and Start to Finish — has been a category-defining range for over three decades.

FAQ
Q: Is this the current Tri-Flex Technology vegan formula?
Yes. The current Nail Envy Original uses Tri-Flex Technology with no animal-derived ingredients or by-products. This is the formulation OPI launched in 2023 and continues to ship today.
Q: Will this work over gel polish?
Nail Envy is designed for bare natural nails, not over gel. For gel damage recovery, fully remove all gel first, then start the 7-day Nail Envy cycle on clean nails.
Q: Can I use this during pregnancy?
The 9-free formulation removes the chemicals most commonly flagged for pregnancy avoidance (formaldehyde, toluene, DBP, TPHP). Consult your doctor for personalized advice, but Nail Envy is significantly safer than older nail formulations.
Q: Is this the authentic OPI product?
Yes. Sourced directly from authorized US nail-supply distribution. We do not re-package, re-bottle, or source from grey markets.
Q: Is it new and unopened?
Yes. Every bottle ships factory-sealed in original retail packaging.
Q: How long does shipping take?
Orders are dispatched within 1 to 2 business days. International transit to Korea typically takes 7 to 14 days depending on customs clearance.
Q: Can I cancel my order?
Orders can be cancelled before dispatch — usually within 24 hours of placement. Once shipped, cancellations are no longer possible.
How to Order
  1. Select the product
  2. Add to cart and proceed to checkout
  3. Enter your Personal Customs Clearance Code (PCCC) when prompted
  4. Confirm your Korean delivery address
  5. Complete payment — your order is placed
  6. Receive your tracking number by email within 1 to 2 business days
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