Piel

Retinal

INCI name: Retinal

Retinal is classed in the EU CosIng database as skin conditioning. Piel groups it with retinoids that benzoyl peroxide breaks down and retinoids.

What it does

How Piel groups it

Piel's knowledge base files Retinal under:

Piel's note

Retinaldehyde, a vitamin A derivative that sits one step closer to retinoic acid than retinol does. It appears in products aimed at the same concerns as retinol, and the same first-weeks dryness is common.

Pairs to be careful with

Piel's routine check flags Retinal next to:

Found in 118 products in Piel's catalogue.

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Identifiers

INCI name
Retinal
CAS number
116-31-4
EC number
204-135-8
CosIng reference
59127

Data from Piel's records, September 19, 2026