BiON Bacteriostat Cleanser is a low-pH acne cleanser from BiON that controls blemish-causing bacteria without stripping or aggravating sensitive, dry, or rosacea-prone skin. At pH 3.6, it works in the skin's optimal range for salicylic acid activity, helping keep pores clear while a blend of botanical extracts addresses the inflammation and bacterial imbalance that drive breakouts. The earthy, herbal scent from peppermint, lavender, oregano, and turmeric makes this one of those rare cleansers that people actually look forward to using.

Key Benefits

Controls blemish-causing bacteria at the source At 0.5% salicylic acid and a pH of 3.6, this cleanser penetrates into pores to dissolve excess oil and discourage the bacterial environment that leads to breakouts.

Reduces redness and inflammation Turmeric root extract (Curcuma longa) inhibits 5-alpha reductase activity to help curb sebum overproduction and visibly calm the red, inflamed skin associated with acne and rosacea.

Blocks follicular triggers of irritation Oregano leaf extract (Origanum vulgare) works within the follicle to block interleukin-6 and histamine, two key drivers of the inflammatory response that keeps skin reactive and prone to flares.

Soothes while it cleanses Licorice root extract (Glycyrrhiza glabra) delivers additional anti-inflammatory support, while sodium lauroyl oat amino acids and glycerin maintain moisture so the cleanse never feels tight or depleting.

Gentle enough for sensitive and dry skin The surfactant system, built around sodium C14-16 olefin sulfonate and cocamidopropyl betaine, produces a thorough yet non-aggressive lather that leaves even dry, reactive skin feeling clean and comfortable.

BiON Bacteriostat Cleanser is a strong fit for anyone dealing with acne on sensitive, dry, or combination skin, especially when breakouts are accompanied by persistent redness or irritation. It is also a go-to recommendation for acne rosacea, where bacterial control and anti-inflammatory support need to work together without causing further sensitivity.

If you have tried acne cleansers before and found them too harsh, too drying, or too irritating to use consistently, this formulation was designed with exactly that frustration in mind. It is equally effective for oily and normal skin types that want a botanically driven approach to daily bacterial control without relying on stronger actives like benzoyl peroxide.

Note that this cleanser has a warm, herbaceous scent from turmeric, oregano, peppermint, and lavender. Most people find it appealing, but if you prefer a fragrance-free experience, it may not be the right fit.

Because this cleanser works at pH 3.6, it sets your skin at the ideal acidity for any salicylic acid or BHA products you layer on afterward. That means your toner and treatment serums absorb into a surface that is already primed to respond, so nothing in your routine goes to waste.

Prepare: Wet your face with lukewarm water.

Apply: Dispense one to two pumps of BiON Bacteriostat Cleanser into your palm and apply to your face.

Technique: Lather gently, massage across the full face and neck, and rinse thoroughly.

Frequency: Use morning and evening as the first step in your skincare routine, followed by your toner, serums, and moisturizer. Apply a broad-spectrum SPF every morning.