Occlusive
Also called: Barrier-forming ingredient
An occlusive is an ingredient that forms a protective surface layer to slow water loss from the skin. Petrolatum, dimethicone, mineral oil, waxes, and some butters can act as occlusives.
At a glance
- Occlusives slow water loss by forming a protective surface layer.
- Petrolatum, dimethicone, mineral oil, waxes, and some butters can act this way.
- Dry skin may like richer occlusion; acne-prone skin may prefer lighter textures.
On this page
The short answer
An occlusive slows water loss from the skin surface.
If humectants bring water to the party and emollients make the room feel comfortable, occlusives help close the windows.
Common occlusives include petrolatum, dimethicone, mineral oil, waxes, lanolin, and some butters.
Why occlusives help dry skin
Dry skin is not only about lacking water. Often, the skin is losing water too easily.
DermNet describes occlusive agents as ingredients that create a hydrophobic layer on the skin surface to reduce evaporative water loss from the stratum corneum[1]. That is why richer creams, ointments, and balms can feel so helpful when skin is cracked, windburned, or over-cleansed.
They are not glamorous. They are useful.
Why texture matters
Occlusive does not always mean greasy.
Petrolatum is strongly occlusive and has a heavy ointment feel. Dimethicone can also reduce water loss, but it often feels smoother and lighter. Waxes such as candelilla cera and cera alba help balms and lip products stay protective.
A moisturiser review[2] places occlusives beside humectants and emollients as one of the main moisturising strategies. Most comfortable products use a blend instead of relying on one dramatic layer.
The practical takeaway
Use occlusives when your skin feels dry, tight, chapped, or easily irritated. Go lighter if your pores clog easily or if a heavy texture makes you less consistent.
Good skincare is not about proving you can tolerate the richest product in the bathroom. It is about choosing the texture you will happily use tomorrow too.
Keep reading
Dictionary
Humectant
Dictionary
Emollient
Dictionary
Skin barrier
Dictionary
Transepidermal water loss
Ingredient
Petrolatum
Ingredient
Dimethicone
Ingredient
Candelilla Cera
Ingredient
Cera Alba
Condition
Dry skin
Condition
Sensitive skin
Condition
Keratosis pilaris ("chicken skin")
Guide
Slugging: when petroleum jelly helps dry skin and when it is too much
Guide
How to treat dry skin on your face without making it angrier
Guide
Best moisturizer for rosacea-prone skin: how to choose calmly
Common questions
What are examples of occlusive ingredients?
Petrolatum, dimethicone, mineral oil, lanolin, waxes, and some butters can reduce water loss by forming a protective surface layer.
Are occlusives bad for acne-prone skin?
Not automatically. Heavy occlusion can feel too rich for some acne-prone skin, but lighter occlusives such as dimethicone can be very tolerable in balanced formulas.
Is slugging an occlusive routine?
Yes. Slugging usually means applying a petrolatum-heavy layer at the end of a routine to reduce water loss. It can help dryness but may be too heavy for some breakout-prone skin.