## 4 Discussion  
The multifunctionality of textiles in cosmetic, pharmaceutical, and fragrance aspects means that the materials do not only serve as clothing, but also serve other functions, e.g., improving health, skin condition, or well-being. Multifunctional textile products are used to produce, among others, cosmetic textiles, aromotherapy textiles, home textiles (curtains and pillows), sports textiles, and clothes [33]. The group of materials containing cosmetics, taking into account their impact on the body, includes products providing the following effects: slimming, moisturizing, energizing, perfuming, refreshing and relaxing, giving vitality, protecting against UV radiation, and improving firmness and skin elasticity [34; 35]. The task of this type of product is to transfer health-promoting substances through their contact with human skin. Other groups include fabrics with fragrances or deodorizing substances [33]. Aromatterrapy cosmetotextiles improve the comfort of the legs, e.g., by reducing their swelling. They may also have an energizing, relaxing effect and facilitate respiratory healing [36; 37; 38]. Popular products also include perfumed scarves, perfumed dresses, bras, moisturizing and energizing tights, as well as underwater with microcapsules of silk, designed to reduce cellulite and smooth the skin [39; 40]. Essential oils and fragrances are widely used in the textile industry, mostly encapsulated in microcapsules. Release mechanisms of the microcapsule's core for cosmetic textiles are friction, pressure, and biodegradation, and for aromotherapy and fragrance textiles, these methods are friction and diffusion through the polymer wall [36]. In the BioTexPants, the biological active compounds are immobilized on textiles thanks to cellulose agar film and they are released by higher temperatures, which is a brand-new solution. Thanks to that, compounds with anti-inflammatory and antibacterial activities may be released and support treatment of lower urinary tract inflammations. The temperature of the treatment in BioTexPants is 40 \({}^{\circ}\)C, as it is close to the human body temperature and increases blood flow, which helps the treatment and supports the release of active compounds from an insert. It was found that temperature conditions are a significant factor influencing the concentrations of volatile organic compounds. Tests conducted by [PERSON] and [PERSON] within the temperature range from 23 to 40 \({}^{\circ}\)C showed that an increase in temperature from 23 \({}^{\circ}\)C to 40 \({}^{\circ}\)C intensifies the release of volatile organic compounds. Moreover, it was found that temperature is an important factor determining the rate of volatile emission decay [41]. Changes in the chemical composition of the phase above the insert were observed during its storage, indicating a decreasing number of compounds probably caused by changes in the absorption of compounds by the cellulose agar film. In the pharmaceutical industry, to achieve good release characteristics, mixtures of various cellulose ethers or mixtures of different grades of a distinct polymer with different ratios can be used based on the intended release rate of the controlled release system [16]. In the BioTexPants, there is pure cellulose or microcrystalline cellulose bonded with agar film. There are no significant changes observed in the amount of compounds released while using cellulose or microcrystalline cellulose. It is \(\alpha\)-bisabolol which is mainly responsible for the antibacterial properties of chamomile essential oil. However, chamazulene also exhibits antimicrobial activity against Grampositive bacteria [21]. \(\alpha\)-Bisabolol and chamazulene were detected in the gas phase in an cellulose agar matrix with chamomile essential oil at a concentration of 1:1 on the day of the insert preparation (1.3% and 0.88%, respectively).