Highly effective serum with probiotics for a healthy scalp and thick hair | Healthy hair starts with a healthy scalp. Hair serum will take care of this perfectly FOREO FAQ Scalp Recovery & Thick Hair Probiotic Serum. Its composition, containing 97% natural ingredients, contains beneficial probiotics that can restore balance in the scalp environment and strengthen hair follicles. Clover extract, for its part, reduces the effects of the DHT hormone, thus effectively preventing hair thinning and promoting hair growth. Let your hair come back to life and treat it to effective care with visible results.