Polysaccharides
Polysaccharides are natural sugars found in plants, seaweeds and oats that act as brilliant hydrators and skin-soothers in skincare and haircare. They form a soft, breathable film on the surface of skin or hair, helping to lock in moisture without feeling sticky. You’ll spot them in moisturisers, sheet masks, serums and conditioners.
How it works in skincare
In cosmetics polysaccharides function as humectants and film-formers, drawing water into the upper layers of the skin or hair shaft while creating a lightweight, invisible veil that reduces transepidermal water loss. Their large molecular size means they sit comfortably on the surface, delivering immediate softness and a smooth finish without clogging pores. Many also boast a silky slip that improves product texture and helps active ingredients glide on evenly.
Key benefits
- Intensely hydrates skin and hair
- Forms a breathable moisture-locking film
- Calms and soothes irritated or sensitive skin
- Improves softness and smoothness
- Enhances product texture and spreadability
- Gives hair shine and manageability
Best for
dry skin, dehydrated skin, sensitive skin, mature skin, irritated skin
Where it comes from
Polysaccharides are most commonly sourced from plants such as oats, aloe vera, tamarind seeds and from seaweeds including brown algae.