Isntree Hyper Retinol EX 1.0 — image 11 / 2
Isntree · Serum

Hyper Retinol EX 1.0

Korea ranking #16 serumUS stock

A higher-strength retinol serum for people who already use retinoids comfortably and want to push a little further on fine lines and texture. The "1.0" refers to its retinoid complex, which pairs real retinol with gentler retinoid-like partners to soften the usual harshness. Best for normal, combination, or drier skin focused on early aging and rough texture.

More detail

The complex combines retinol with a milder retinol derivative (retinyl palmitate) and bakuchiol, a plant ingredient that behaves somewhat like retinol, so the strength is spread across several forms. Adenosine, niacinamide, peptides, and ceramides round it out to support firmness, tone, and the barrier against retinol dryness. The texture is a light, hydrating serum. Use it at night on clean, dry skin, starting two or three times a week and building up as your skin tolerates it, always over unbroken skin. Expect some dryness or flaking early on, wear sunscreen daily, and skip it during pregnancy and breastfeeding.

4.42,200 reviews
BEvidence grade
$28Best total · duties in
lightTexture · Serum
For: Normal · Combination · DryAll tonesAgingTexture
Is this right for your skin? take the 60-second quiz and this box becomes a personal verdict.
Skin fit ×45%
Evidence ×35%77
Practicality ×20%50
Ingredient check⚠ 2 caution flags
Fragrance-free Fungal-acne safe No drying alcohol Essential-oil free No pregnancy-caution actives
RetinolThe reference anti-aging active: decades of data on lines, texture and toneAdenosineKorea's official anti-wrinkle functional ingredient (MFDS-listed)
Evidence checkGrade B · MFDS ✓
🇰🇷 MFDS-certified functional cosmetic brightening (미백) · anti-wrinkle (주름개선)Filed with Korea's FDA as 「이즈앤트리하이퍼레티놀이엑스1.0세럼」 — a regulator-reviewed efficacy claim, not a marketing one.
Grade BSolid transparency and consistent ratings; limited third-party clinical data (seed draft — verify before launch).
How grading works
Scored on clinicals · certifications · cross-platform rating consistency · transparency. Brands can't pay to change this.
What Korea says#16 serum
#16 serum · Korea ranking · Rank indicative — weekly verification pending
Reviewscommunity links

No close skin matches yet —

Used this product?
Read full third-party reviews

We link out instead of copying — full reviews belong to their authors and platforms.

Where to buybest total $28
RetailerPriceShip + dutyTotal
Amazon ✓ official
Official store — verify seller before launch
Accepts: Visa · MC · Amex · Discover · Amazon Pay · Affirm
$28$28BESTShop →
Olive Young Global ✓ official
Ships from Korea 7–14d · +15% duty
Accepts: Cards · PayPal · Apple Pay · Alipay+
$22$10.30$32.30Shop →
Isntree official ✓ official
Brand's official store, ships from Korea · +15% duty
Accepts: Cards · PayPal (varies)
$28$10.20$38.20Shop →

Totals include estimated import duty on Korea-shipped orders (15%, post–de minimis). Links open retailer search; exact product links are coming at launch. Payment methods indicative — verify at checkout.

Similar & possibly cheaper

Tap a product for its full page, or ↔ Compare for the head-to-head table.

See all Hyper Retinol EX 1.0 dupes & cheaper picks →