Field notes on skin under environmental load Edition of 1 August 2026
Surf Skin Lab
Barrier physiology
for cold, wet and wind
Section

Ingredient classes by function, and a routine that survives a car park

Occlusives, humectants and emollients as three different jobs. What labels do and do not mean. And the five minutes after a session, ordered by benefit per second spent.

Ingredient classes by function, and a routine that survives a car park
Ingredient classes by function, and a routine that survives a car park
7 articles
01

Occlusives, humectants and emollients: three different jobs

Three classes of ingredient with three distinct mechanisms, routinely described as though they were one thing called moisturiser. Separating them changes what you use and when.

Materials · Function · 10 min
02

The ingredient classes that support barrier repair, by function

A functional vocabulary for reading a label, with no brands, no products and no claims we cannot support.

Materials · Function · 10 min
03

What fragrance free and hypoallergenic actually mean

Two of the most reassuring words on a label, and two of the least informative. What each one is required to mean, and what it is not.

Materials · Labels · 9 min
04

Patch testing as a self care practice, and what it is not

Trying something new on a small area first is sensible and cheap. It is also not the same thing as clinical patch testing, and confusing the two causes problems.

Materials · Practice · 9 min
05

The car park routine: what to do when you are cold, tired and not at home

Every sensible post session recommendation assumes a warm bathroom and ten spare minutes. Here is the version for a February car park with numb hands.

Materials · Routine · 10 min
06

Field care for lips and hands: what to carry, and when it is worth using

Two sites account for most winter skin complaints in outdoor people, and both are manageable with almost nothing, provided the almost nothing is actually with you.

Materials · Routine · 9 min
07

Reading an ingredient list by function, not by brand

A practical method for working out what a product will do from its list, without knowing any chemistry and without trusting anything on the front.

Materials · Labels · 9 min
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