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Know if your layering order actually works

Enter your AM and PM steps and get a structured critique of layering order, active conflicts, and a suggested sequence.

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5 credits per audit · No subscription

Clear botanical serum dripping from a glass pipette beside a beaker
Illustrative exampleCombinationFull AM & PM

PM steps, as submitted

  1. 1Oil cleanser
  2. 2Foaming wash
  3. 0.5% Retinol serumStacks with glycolic below
  4. 7% Glycolic acid tonerSame night as retinol
  5. 5Ceramide barrier cream

Suggested order

Needs minor adjustment
  1. 1Double cleanse
  2. 2Retinol — alternate nights with glycolic
  3. 3Ceramide barrier cream
Active load HighFlags 2

From cluttered shelf to sequenced steps

See how overlapping exfoliants and misordered serums get organized into a balanced daily schedule.

AM, as submitted

5 steps
  1. 1Water splash
  2. 10% Vitamin C serumApplied before the acid toner
  3. 2% Salicylic acid tonerBetter on clean skin first
  4. 4Hyaluronic acid gel
  5. 5SPF 50

AM, suggested

Resequenced
  1. 1Cleanser
  2. 2Salicylic toner
  3. 3Hyaluronic gel
  4. 4Moisturizer
  5. 5SPF 50

Illustrative example. Your audit reflects your own products.

Three direct steps to routine clarity

Enter your current products, select your skin type and focus, then run a formulation-aware audit.

  1. 1

    List your steps

  2. 2

    Set skin type and scope

  3. 3

    Run the audit

How Stratum reviews a routine

Evaluate layering order and active load

Inspect product weights from thin essences to dense creams while checking for accidental active duplication.

Layering coherence
Needs minor adjustment
Active load
High for combination skin
Three skincare swatches on stone: a watery toner, a gel serum and a dense cream
  1. 1TonerWatery · first
  2. 2Gel serumLight · middle
  3. 3Barrier creamDense · last
Clear water droplets and oil bubbles resting on a white surface

Layering flags

2 found
  • PM: Retinol and 7% glycolic acid in one session raises irritation risk. Move glycolic to alternate nights.
  • AM: Salicylic toner after Vitamin C. Apply the toner first on clean skin, or rotate the two.

Detect conflicting actives before irritation starts

Identify redundant AHAs, BHAs, retinoids, and direct acids stacked in the same morning or evening routine.

  • AHA
  • BHA
  • Retinoids
  • Vitamin C

Optimal split between morning and evening

Move photosensitizing actives to night and reserve antioxidant shields and barrier hydrators for daytime.

AM

  1. 01Cleanser
  2. 02Salicylic toner
  3. 03Hyaluronic gel
  4. 04Moisturizer
  5. 05SPF 50

PM

  1. 01Double cleanse
  2. 02Retinolor glycolic, alternate nights
  3. 03Ceramide cream

Simple on-demand audits with zero subscriptions

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Enthusiast150 credits30$36
A glass pipette releasing one clear drop above an amber bottle

Built for formulation logic, not medical diagnosis

Stratum delivers educational product ordering based on formulation principles without medical claims.

Is Stratum medical or dermatological advice?
No. Stratum provides educational analysis of cosmetic layering and ingredient compatibility.
What should I enter?
Product names, categories and known actives, in your current application order.
Can I review only my morning routine?
Yes. Choose AM only, PM only, or full AM & PM.
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