Tightening Retinol Serum

2024 Korean Skin Care Award Winner

A retinol serum infused with 0.1% pure retinol, along with A-Shot™, which is designed to directly penetrate pores and enhance absorption, delivers retinol deep into the skin to target wrinkles and enlarged pores, helping to achieve smooth and firm skin.
When will I see results?

Retinal works up to 11x faster at the skin level than retinol. Many people notice smoother texture and a brighter tone within 4 weeks of consistent use, with firmer skin and softened lines becoming more visible over 8–12 weeks. Results continue to build with regular nightly use and daily SPF protection.
Will this irritate my skin?

Retinal is often better tolerated than retinol because it requires fewer conversion steps to become active in the skin. Our 0.1% retinal is encapsulated for slow release, meaning it penetrates deeper with less surface irritation. Most users experience smoother, firmer skin without peeling or redness — but as with any Vitamin A, it’s best to start 2–3 nights per week and build up as your skin adjusts.
Shipping & Guarantee

We ship worldwide, with delivery times depending on your location. Every order is backed by our 90-day results guarantee: if you don’t see visible improvements in your skin, simply contact us for a full refund — no hassle, no risk.
Ingredients

Active Ingredients

  • Retinal (0.1%) – next-generation Vitamin A, works faster than retinol to smooth fine lines, improve firmness, and refine texture.
  • Niacinamide (5%) – brightens uneven tone, reduces the look of dark spots, and supports a strong skin barrier.
  • Panthenol (1%) – deeply soothes and hydrates to minimize irritation.
  • Matrixyl® Peptides (3%) – Palmitoyl Tripeptide-1 and Palmitoyl Tetrapeptide-7 work together to stimulate collagen and improve elasticity.

Supporting Ingredients

  • Glycerin & Butylene Glycol – humectants that draw in hydration for plump, supple skin.
  • Caprylic/Capric Triglyceride & Cetearyl Alcohol – lightweight emollients that soften and smooth skin without greasiness.
  • Dimethicone & Crosspolymers – provide a silky finish and lock in actives for better delivery.
  • Sodium Lactate & Glucose – natural moisturizers that help maintain hydration balance.
  • Hydrolyzed Sponge & Polysorbates – stabilize and enhance penetration of key actives.

Full INCI List
Water, Butylene Glycol, Glycerin, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Diisostearyl Malate, 1,2-Hexanediol, Polypropylsilsesquioxane, Cetearyl Olivate, Cetearyl Glucoside, Sorbitan Olivate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Lecithin, Carbomer, Arginine, Dimethicone/Vinyl Dimethicone Crosspolymer, Xanthan Gum, Ethylhexylglycerin, Sorbitan Isostearate, Sodium Lactate, Hydrolyzed Sponge, Disodium EDTA, Polysorbate 20, Glucose.
Tightening Retinol Serum
  • Tightening Retinol Serum
  • Tightening Retinol Serum

SEEING IS BELIEVING

Real People. Real Results

BEFORE
AFTER

Susan K, 48

"After a few weeks, the lines around my eyes looked softer and my crow’s feet were less noticeable. I finally feel comfortable smiling again without worrying about deep wrinkles showing."

Crow’s Feet • Smoother Eyes

Retinal Tightening Booster
BEFORE
AFTER

Sally T, 58


"I noticed my skin starting to feel firmer and the fine lines softening around my mouth and cheeks. Looking in the mirror feels better now that my skin looks more refreshed and even."

crow’s feet • smoother eyes

Retinal Tightening Booster
BEFORE
AFTER

Abigail B, 40


"The difference was clear. My skin looks smoother and more hydrated, especially around my cheeks where texture and dullness used to bother me most. Friends have commented that I look more rested."

texture • hydration • glow

Retinal Tightening Booster
BEFORE
AFTER

Maria L, 45


"The wrinkles around my eyes have eased, and my skin looks brighter and more even. I feel more confident getting through the day without makeup to hide the lines."

fine lines • brightness • confidence

Retinal Tightening Booster

92%

of customers placed a repeat order after their first purchase.*

92%

of customers placed a repeat order after their first purchase.*

92%

of customers placed a repeat order after their first purchase.*

92%

of customers placed a repeat order after their first purchase.*

THE SCIENCE BEHIND

WHAT IS RETINAL?

Revolutionary retinal formula with 0.1% pure retinal, 9-peptide complex, and proprietary A-Shot™ delivery system targets wrinkles, texture, and pores. Contains 162,000 A-Shot™ particles plus 1% panthenol for enhanced penetration and reduced irritation.

Clinically proven results:

  • Improved wrinkles and reduced pore size
  • Enhanced skin density for firmer texture

Visible transformation with advanced delivery technology“next-generation retinoid” — combining the power of prescription-strength results with the comfort of cosmetic skincare.

90 DAYS MONEY BACK

Bestseller

Our Guarantee

See visible results — or your money back.

We’re confident in the power of Retinal Shot. If you don’t notice a difference in your skin, simply contact us within 90 days for a full refund. No hassle, no risk — just results you can trust.
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The SKEIN Glow Club

See how our community is transforming their skin with Skein. Every photo and review is from verified customers just like you.

Frequently asked questions
Can I use this with other products?

Yes. Retinal pairs well with hydrating ingredients like hyaluronic acid, ceramides, and niacinamide. If you use strong acids (AHA/BHA) or exfoliants, alternate nights to avoid over-sensitizing the skin
Can I use this on sensitive skin?

Our 0.1% encapsulated retinal is designed for gradual release, which makes it gentler than traditional retinol. If you have very sensitive skin, start 2 nights per week and build up as your skin adjusts. Always follow with a moisturizer.
Does this help with sunken eyes?

Retinal improves the look of fine lines, wrinkles, and texture around the eyes, but it won’t replace lost volume. It helps refresh and smooth the eye area so crow’s feet and surface lines look softer.
Is this suitable for all skin tones?

Yes. Retinal is effective across all skin tones and does not cause bleaching or uneven lightening. Instead, it helps even out discoloration and promotes clarity.

Is it tested by dermatologists?

Yes. The formula has been dermatologist-tested for safety and tolerability on different skin types.