Itchy rash after using a hot tub? Pseudomonas folliculitis – also known as hot tub folliculitis or hot tub rash – A dermatologist explains

I regularly see patients who come in with red, itchy rashes after bathing in a jacuzzi or heated pool. Many first think it is heat rash or an allergy, but in fact it is often what is known as pseudomonas folliculitis – also known as hot tub rash or hot tub folliculitis.

The condition is caused by the bacterium Pseudomonas aeruginosa, which thrives in moist environments such as jacuzzis, spa baths and sometimes poorly cleaned pools. When the skin is exposed to these bacteria, the hair follicles can become inflamed, leading to small red bumps or pustules that itch or sting. The rash usually appears on areas that have been covered by swimwear, especially the back, buttocks and thighs.

Pseudomonas folliculitis is usually harmless and generally clears up on its own within one to two weeks. To relieve itching and speed up healing, you can use mild antibacterial washes and avoid squeezing the spots. A moisturising lotion containing propylene glycol can also help, as it makes the skin environment less favourable for bacteria while reducing irritation.

To prevent recurrence, it is important to keep spa baths and pools thoroughly cleaned and to always shower after bathing. These simple self-care tips often go a long way, and you rarely need to seek medical care.

Since this type of folliculitis often affects the back in particular, it can be hard to reach to apply products to the skin yourself. This is where the EVOLVIENCE REACH Back Lotion Applicator can be a great help. It makes it easy to apply creams without spills, is hygienic and easy to clean under running water, and is made from skin-friendly, hypoallergenic material of the highest quality – for convenient and effective self-care at home.