The method · MSL

EIGHT
DIMENSIONS.

Each one asks a few plain questions and adds one segment to your MSL code. Read together, they describe your skin for skincare.

  1. D1 Skin Behavior
  2. D2 UV Response
  3. D3 Heritage Profile
  4. D4 Life Stage
  5. D5 Hormonal Phase
  6. D6 Cycle Phase
  7. D7 Environment
  8. D8 Lifestyle

D1 · Skin Behavior · in your code: OSPT

Skin Behavior.

Six everyday questions place your skin on four axes. Together they give one of 16 four-letter types, after the Baumann skin type system.

Hydration

O OilyDry D

Reactivity

S SensitiveResistant R

Pigmentation

P PigmentedNon-pigmented N

Aging

W Wrinkle-proneTight T
  • “3 hours after washing — no products — your skin feels?”
  • “You try a brand new serum. What happens?”
  • “Smile, then relax. What do you see?”

D2 · UV Response · in your code: III

UV Response.

Pick the tone closest to your natural skin in daylight. The six phototypes of the Fitzpatrick scale run from “always burns” to “never burns”.

IVery fair — always burns
IIFair — burns easily
IIIMedium — sometimes burns
IVOlive — rarely burns
VBrown — very rarely burns
VIDark brown to black — never burns

D3 · Heritage Profile · in your code: ME

Heritage Profile.

Skin structure differs by background: how much melanin it carries, how marks fade, how it ages in the sun. Choose the group closest to yours.

  • East Asian
  • South Asian
  • Middle Eastern
  • Turkic / Central Asian
  • Sub-Saharan African
  • Mediterranean / Southern European
  • Central / Eastern European
  • Northern European
  • Latin American
  • Mixed / Multiple Heritage
  • Prefer not to say

“Prefer not to say” keeps your profile neutral.

D4 · Life Stage · in your code: 30

Life Stage.

Your age bracket. Skin needs change over the decades, and your routine changes with them.

13–17
18–29
30–39
40–49
50–59
60+

D5 · Hormonal Phase · in your code: RC

Hormonal Phase.

Where you are hormonally, from puberty through pregnancy to post-menopause, or male baseline.

  • Pre-puberty
  • Puberty
  • Regular menstrual cycling
  • On hormonal contraception
  • Pregnant
  • Postpartum / Breastfeeding
  • Perimenopause
  • Menopause
  • Post-menopause
  • Male baseline
  • Prefer not to say

D6 · Cycle Phase · in your code: FO

Cycle Phase.

Asked only if you cycle regularly or use hormonal contraception. Oil, sensitivity and hydration shift day by day across the cycle.

Menstrual

Day 1–5

Follicular

Day 6–13

Ovulation

Day 14–16

Luteal

Day 17–28

Also possible: “I don’t track” and “Not applicable”.

D7 · Environment · in your code: MD

Environment.

Seven climates, from Nordic to tropical to a dense megacity, and how much of your day you spend outdoors.

  • Continental — hot summers, cold winters
  • Mediterranean — warm, dry summers
  • Tropical — hot and humid year-round
  • Arid / Desert — dry heat, low humidity
  • Nordic — cold, dark winters
  • Oceanic — mild and damp
  • Dense urban megacity
  • Mostly indoors
  • Balanced mix
  • Mostly outdoors

D8 · Lifestyle · in your code: 6

Lifestyle.

Four diet questions make your diet score, from 0 to 12. Sleep, stress and smoking round it off.

Diet score · 0–12

  • Dairy
  • Alcohol
  • Sugar & refined carbs
  • Water

Daily life

  • Sleep quality
  • Stress level
  • Smoking

Optional

  • Blood group
  • Rh factor

Asked for research only. It never changes your recommendations.

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A cosmetic skin profile, not a medical diagnosis.