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Retinol 1% Lethal Youth Serum 1
Retinol 1% Lethal Youth Serum 2
Retinol 1% Lethal Youth Serum

Retinol Serum · 30ml

Retinol 1%
Lethal Youth Serum

Retinol 1.0% · Peptide Complex

We push wrinkles hard — without treating skin carelessly.
A retinol serum built sharp on results, slower on the sting.

₩78,00030ml / Dropper

Target

Fine lines, loss of firmness, stretched-looking pores

Texture

Silky serum that spreads clean

Positioning

1% retinol backed by peptides for a stronger feel over time

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About

Slow Aging,
Not Slow Performance.

Lethal Youth keeps retinol’s direction clear, then braces the formula with a peptide complex. It is not built to blast you in week one — it is built so texture and firmness catch up when you stay consistent.

For skin that wants fine lines and pore look handled in the same lane.

Key Actives

Retinol

1.0%

The core aging-care lane for fine lines and texture shift.

Peptide Complex

Support

Support structure for skin that looks soft or hollowed on the surface.

Specs

Main Claim
Fine-line care, firmer-looking pores, steady aging care
Recommended For
Anyone already eyeing retinol; skin that wants firmness and pores in one product
Packaging
30ml dropper bottle

References

Reference Papers

These citations are carried over from the Ingredient Dictionary Sources for this product’s actives. For Peptide Complex, we link the Palmitoyl Pentapeptide-4 entry as a representative peptide.

Retinol

  1. Lau M, et al. “Cosmeceuticals for antiaging: a systematic review of safety and efficacy.” Arch Dermatol Res, 2024;316(5):173. — 10.1007/s00403-024-02908-2
  2. Kafi R, et al. “Improvement of naturally aged skin with vitamin A (retinol).” Arch Dermatol, 2007;143(5):606-12. — 10.1001/archderm.143.5.606
  3. Zasada M, et al. “A Clinical Anti-Ageing Comparative Study of 0.3 and 0.5% Retinol Serums.” Skin Pharmacol Physiol, 2020;33(2):102-116. — 10.1159/000508168
  4. Siddiqui Z, et al. “Comparing Tretinoin to Other Topical Therapies in the Treatment of Skin Photoaging: A Systematic Review.” Am J Clin Dermatol, 2024;25(6):873-890. — 10.1007/s40257-024-00893-w

Peptide Complex (e.g. Palmitoyl Pentapeptide-4)

  1. Robinson LR, et al. “Topical palmitoyl pentapeptide provides improvement in photoaged human facial skin.” Int J Cosmet Sci, 2005;27(3):155–160. — PMID 18492182
  2. Aruan RR, et al. “Double-blind, Randomized Trial on the Effectiveness of Acetylhexapeptide-3 Cream and Palmitoyl Pentapeptide-4 Cream for Crow's Feet.” J Clin Aesthet Dermatol, 2023;16(2):37–43. — PMID 36909866
  3. Abu Samah NH, Heard CM. “Topically applied KTTKS: a review.” Int J Cosmet Sci, 2011. — PMID 21535443

Batch 001 · Pre-Production Protocol

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