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Skincare · Shereene Idriss
Shereene Idriss

The Retinoid Layering Protocol: Go Low, Go Slow

A gradual, dermatologist-guided frequency ramp for starting or restarting a retinoid, built to reduce irritation while still building nightly tolerance over 6 to 8 weeks.

Evidence: A for the retinoid class itself (strong RCT evidence for anti-aging/acne benefit), B for this specific low-and-slow ramp schedule (her clinical-practice guidance, not itself RCT-tested)
Not endorsed · based on the published work of Shereene Idriss
At a glance
Time
6-8 week ramp, then ongoing
Steps
7
Difficulty
Beginner
Strong Retinoids are one of the most evidence-backed anti-aging and anti-acne ingredients in skincare, but they commonly cause dose-dependent irritation as skin builds tolerance.
The protocol

Start with the gentlest effective formulation

Choose a retinol ester or low-percent retinol rather than a prescription-strength tretinoin if you're new to retinoids
Why ↓

A gentler formulation lowers the odds of irritation during the initial adjustment period.

Shereene Idriss, MD

Apply only 1-2 nights per week at first

1-2 nights per week for the first few weeks only
Why ↓

Limits initial exposure while the skin barrier adjusts.

Shereene Idriss, MD

Add one night every 1-2 weeks

Increase to 2x/week, then 3x/week, and so on, until nightly use is tolerated, typically over 6-8 weeks
Why ↓

A gradual frequency increase builds tolerance instead of forcing it.

Shereene Idriss, MD

Sandwich method or apply to dry skin

Apply a plain moisturizer first, then the retinoid on top, or apply the retinoid only to a completely dry face, to reduce stinging
Why ↓

Buffering slows retinoid penetration just enough to cut irritation without cutting the benefit.

Shereene Idriss, MD

Pea-sized amount, dry skin, at night

A pea-sized amount applied to a dry face at night, avoiding the eye area and any broken skin
Why ↓

More product does not mean faster results and raises irritation risk; retinoids also break down in sunlight, so they're a nighttime step.

Shereene Idriss, MD

Daily broad-spectrum SPF, no exceptions

Broad-spectrum sunscreen every morning while using a retinoid
Why ↓

Retinoids increase sun sensitivity; skipping SPF undermines the whole routine.

Shereene Idriss, MD

Back off at the first sign of persistent irritation

Skip a few nights or drop back a frequency step if persistent redness, peeling, or burning develops
Why ↓

Pushing through irritation risks a compromised skin barrier; this is not a substitute for an in-person dermatologist visit for a diagnosed skin condition.

Shereene Idriss, MD
The evidence 3
Strong

Retinoids are one of the most evidence-backed anti-aging and anti-acne ingredients in skincare, but they commonly cause dose-dependent irritation as skin builds tolerance.

5 Golden Rules To Incorporate Retinol In Your Routine! (Shereene Idriss, MD) Watch youtube.com
8 Retinol Tips for Perfect Skin, A Derm's Guide (Shereene Idriss, MD) Watch youtube.com
5 Golden Rules to Incorporate Retinol in Your Routine Read dridriss.com
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Not medical advice. This page is for education only and is not a substitute for professional medical care. Consult a qualified clinician before changing your health routine.
Independent curation. YourProtocol is an independent platform. This protocol is based on the publicly available work of Shereene Idriss and is not created, reviewed, endorsed by, or affiliated with Shereene Idriss or MD · Idriss Dermatology, NYC.

Is this for you
  • Anyone new to retinoids, or restarting after irritation, who wants a lower-irritation ramp
  • People targeting anti-aging or acne benefits from the retinoid class
  • Not for anyone with a diagnosed skin condition without dermatologist guidance
Cautions
  • Retinoids increase sun sensitivity; daily broad-spectrum sunscreen is required, not optional, while using one
  • Do not use with a diagnosed skin condition without a dermatologist's guidance
  • Do not use while pregnant or breastfeeding; this is a contraindication, not a dermatologist-supervised option.
  • Back off frequency at the first sign of persistent redness, peeling, or burning rather than pushing through
  • The specific ramp schedule is clinical-practice guidance, not itself a randomized-controlled-trial-tested protocol; the underlying retinoid benefit is well-established
  • Educational only, not medical advice
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