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Propylene Glycol

Propylene glycol is a small, synthetic molecule that attracts water. It is used in cosmetics, foods and medicines.

On a list as
Propylene Glycol
What it does
Humectant and solvent
Where it comes from
Synthetic
Vegan?
Yes

Why it’s in a formula

It helps skin hold moisture, keeps a formula from drying out, and helps other ingredients dissolve and spread evenly.

  • Most people use it without trouble, but it is a recognised cause of contact allergy in a minority: the American Contact Dermatitis Society named it Allergen of the Year in 2018. If you've reacted to it before, check the list.

Read from each piece’s published ingredient list. 7 pieces.

Le Peptide

Le Peptide

Matrixyl 3000 Peptide Serum — 30ml

$128

Listed as Propylene Glycol

Cruelty-free; vegan status not confirmed

L'Élixir

L'Élixir

Anti-Aging Elixir — 30ml

$98

Listed as Propylene Glycol

Not vegan: honey (as mel extract)

Le Purifiant

Le Purifiant

Foaming Cleanser — 200ml

$72

Listed as Propylene Glycol

Vegan, going by its list

L'Aloès

L'Aloès

Aloe Soothing Gel — 100ml

$44

Listed as Propylene Glycol

Vegan, going by its list

Le Mascara

Le Mascara

Volumizing Mascara

$46

Listed as Propylene Glycol

Not vegan: beeswax

Le Gommage Corps

Le Gommage Corps

Apricot Body Scrub — 236ml

$46

Listed as Propylene Glycol

Not vegan: honey

L'Encre

L'Encre

Liquid Eyeliner

$32

Listed as Propylene Glycol

Vegan, going by its list

Is propylene glycol safe for skin?

At cosmetic levels it is considered safe and most people tolerate it. A small number of people are allergic or irritated by it; if that's you, avoid the pieces below.

Is propylene glycol the same as antifreeze?

No. Toxic antifreeze is ethylene glycol. Propylene glycol is a different, far safer compound used in food and medicine.

How we know: every ingredient list on this site is the manufacturer’s own, read piece by piece and shade by shade, and the pieces above are worked out from those lists each time the site is built. Ingredient names and functions follow the EU’s CosIng database. This page describes cosmetic ingredients; it isn’t medical advice.