Probiotics are live microorganisms that have a positive effect on the host organism. They are used in the food, pharmacological and cosmetology industries. The basic function of probiotics is prevention and prophylaxis against the induction and development of disease entities. An important factor is the influence of probiotic bacteria on the etiopathogenesis of acne formation, reducing the amount of pro-inflammatory cytokines, as well as other skin diseases, such as psoriasis, allergies, and atopic dermatitis by reducing inflammation. The aim of the article to summarize the current scientific knowledge available regarding the use of probiotic bacteria in the cosmetology industry. Probiotics do not show carcinogenic effects, and even show a protective effect before their development and are safe to use. In cosmetology they show anti-aging, moisturizing, rejuvenating and protective properties against ultraviolet radiation.
Glycosaminoglycans are structurally complex, linear polysaccharides. They show a hydrophilic effect and have the ability to bind water. In cosmetic preparations, they are obtained biotechnologically and appear in the form of hyaluronic acid, sodium hyaluronate and potassium hyaluronate. The aim of the study was to present the possibility of using glycosamidoglycans in cosmetology, trichology and aesthetic dermatology. These compounds are considered safe for topical application, they keep the skin in proper condition, support cell renewal, and increase the skin’s resistance to harmful external factors. They also bring satisfactory results in terms of application in trichology. A number of studies show that they stimulate hair growth, reduce excessive flaking of the scalp, seborrhea and support the treatment of androgenetic alopecia.
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