SKINLUMIS
Skinlumis Skin School

Where skin science becomes personal.

30 lessons. 6 tracks. Powered by your skin data, every lesson is ranked against your archetype and your concerns.

30
Lessons
6
Tracks
5
Free lessons
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This week's intelligence
Editor's Pick

Retinoids 101

The complete guide from retinol to tretinoin.

intermediate·12 min·+15 pts
Key takeaways
  • ·All retinoids ultimately convert to retinoic acid inside the cell.
  • ·Strength order: retinyl esters < retinol < retinaldehyde < tretinoin.
  • ·Every conversion step loses potency, but also reduces irritation.
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The Curriculum

Six tracks. From barrier biology to biological age.

Skin Fundamentals
beginner · 5 lessons
Free

Barrier, pH, microbiome, and the difference between skin type and skin condition. Start here.

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Active Ingredients Masterclass
intermediate · 5 lessons
Member

Retinoids, vitamin C, AHAs, BHAs, peptides, the molecules that move the needle.

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Protocol Science
intermediate · 5 lessons
Member

Layering, timing, seasonal adaptation, recovery. The strategy behind every routine.

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Concern Protocols
advanced · 5 lessons
Member

Clinical-grade strategies for acne, aging, pigmentation, sensitivity, and hormonal skin.

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Professional Track
professional · 5 lessons
Member

Estheticians and clinicians only, diagnostic reading, sequencing, peel prep, retail conversion.

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Longevity Beauty
advanced · 5 lessons
Member

Skin as a biomarker. NAD+, peptides, oxidative stress, and the architecture of biological aging.

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Make every lesson personal

Sign up and the curriculum re-ranks itself around your skin.

Free archetype quiz. Free scan. Lessons matched to your barrier, your concerns, your stage of life.

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Skinlumis Skin School, Where skin science becomes personal