Reduce moisture on the skin of the feet
Use PediSpray® as part of your evening routine on clean, dry feet and allow it to dry completely. The antiperspirant helps reduce perspiration, so you are less likely to slip on the footbed the next day.
Sweaty feet in flip-flops are most noticeable by a slippery or sticky footbed. Your toes will grip to find traction, your foot will slide forwards and, over time, the pair may start to smell of sweat.
The solution consists of three parts: reducing moisture on the skin, a footbed suited to your needs, and flip-flops that you can clean and leave to dry regularly.

Slippers allow plenty of air to reach your feet, but the sole of the foot remains in direct contact with the footbed. Heat, friction and sweat form a slippery film there, particularly on EVA, rubber and smooth plastic.
An absorbent or textured insole can provide better grip, but no slipper can stop perspiration. That is why you need to tackle both the damp skin and the worn pair of slippers.
Follow these steps in this order. This will prevent a clean pair from becoming damp again straight away and stop odours from returning to the footbed.
Use PediSpray® as part of your evening routine on clean, dry feet and allow it to dry completely. The antiperspirant helps reduce perspiration, so you are less likely to slip on the footbed the next day.
Remove the insole or rinse it in accordance with the brand’s care instructions. Pay particular attention to toe marks and dark, sticky areas where skin oils and sweat accumulate.
Do not put a damp pair straight into a cupboard, sports bag or suitcase. Allow both slippers to dry separately and, if using them daily, alternate between two pairs.
The material and profile of the footbed help, but the difference really comes down to how much moisture gets between the sole of your foot and the flip-flop. You should therefore use PediSpray® in combination with a clean and thoroughly dried pair.
Smooth EVA and rubber are lightweight and water-resistant, but can feel slippery when warm. A textured footbed often provides better grip. Cork, leather or fabric can absorb moisture, but require more careful maintenance and sufficient time to dry.
Above all, choose a pair that you can actually clean. For the beach, swimming pool and sport, washable materials are practical. For everyday use, a moulded, grippier footbed may be more comfortable than a completely smooth model.
Odour usually originates in the footbed. Clean the surface, allow it to dry completely, and also treat older pairs that you wear frequently. Simply adding perfume does nothing to remove any residual moisture and dirt.
PediFris® Classic is intended for use in shoes. In open sandals worn on bare feet, loose powder does not usually stay in place. In this case, use PediSpray® on the skin and keep the footbed clean.
Do your feet become damp quickly in other footwear too? What to do about sweaty feet explains causes and general self-care. Compare spray, powder and foot deodorant among remedies for sweaty feet.
Brief answers on grip, material, cleaning and odour in slippers.
Sweat forms a slippery film between the sole of your foot and the insole. Smooth EVA, rubber and plastic in particular can therefore feel sticky or slippery. Less moisture on the skin and a textured insole provide better grip.
Choose flip-flops with a non-slip, moulded and easy-to-clean footbed. Rinseable materials are practical for the beach and sport; leather, cork and textiles can absorb moisture but take longer to dry.
Clean the entire contact surface in accordance with the manufacturer’s instructions and allow both slippers to dry completely. If used daily, alternate between two pairs to prevent moisture from remaining in the footbed.
PediSpray® helps reduce perspiration on the skin of the feet. This results in less moisture between the skin and the insole. Combine the spray with a clean, non-slip and thoroughly dried pair of shoes.
PediFris® Classic is intended for use in shoes. In open sandals worn on bare feet, loose powder does not usually stay in place. You should therefore use PediSpray® on the skin and clean the footbed.
Written by Judith de Jong (Content owner, PediFris®). Medically reviewed by Sébastien Dequidt, podiatrist. Updated on 24 August 2026. We base our advice on foot care practice and on the medical sources listed below.
Worried about a persistent complaint, fungal nail, athlete’s foot or excessive sweating? Consult your GP, podiatrist or chiropodist.