Disodium Succinoyl Farnesylcysteine for Skin Rejuvenation - Quick Reference Sheet

Disodium Succinoyl Farnesylcysteine for Skin Rejuvenation

Created on 07/04/2026 – Quick Reference based on Evidence Review created using AI4L / Opus 4.8 Audit

A lab-made leave-on skincare molecule that calms skin inflammation and helps slow sun-driven collagen breakdown. In one small human study a 1% gel improved wrinkles, hydration, and texture, and it is well tolerated. Nearly all evidence comes from the developer and has not been independently confirmed — promising but early. (Full Review)

Protocol

Formulation
~1% leave-on
Serum or gel on clean skin
Frequency
1–2× daily
Twice daily for more consistent exposure
Duration
8–12 weeks
Minimum course to assess visible change
Time to effect
Wrinkles & Appearance
~12 weeks
Appearance endpoint; changes are gradual
Hydration & Texture
A few weeks
Earliest surface improvements
Comfort & Redness
A few weeks
Soothing of low-grade irritation

Benefits

Contraindications
  • Known allergy to the ingredient or formulation
Key Interactions
  • Topical retinoids (e.g., tretinoin) or antibiotics
  • OTC actives (retinol, AHA/BHA, benzoyl peroxide)
  • Pregnancy, breastfeeding, or broken/inflamed skin

Risk & Side Effects

  • High:
  • Medium:
  • Low: Application-site irritation
  • Speculative: Allergic contact sensitization; uncertainty from limited, developer-generated safety data

Monitoring

Marker Target Why
Skin hydration (corneometry) Higher than baseline Tracks the hydration benefit
Transepidermal water loss (TEWL) Lower than baseline Reflects barrier integrity
Erythema index (redness) Lower than or equal to baseline Captures the redness-soothing effect
Wrinkle depth / texture score Improved versus baseline Primary appearance endpoint

Cadence: Baseline, then ~4, 8, and 12 weeks; every 3–6 months thereafter if use continues

Qualitative Assessment

  • Visible facial redness and reactivity
  • Skin comfort (tightness, stinging, dryness)
  • Smoothness and overall radiance on self-assessment
  • Tolerance of the wider routine, especially with retinoids