## 1 Introduction  
In recent years, sport has emerged as a proven necessity for an individual to maintain their life in a healthy, balanced, and quality manner. The modern urban individual of today turns to sports they can do without leaving the city, both to cope with the stress of work life and to maintain their health. Additionally, it is clear that sports performed in groups provide the opportunity for individuals to socialize. As a result of the rising living standards of people parallel to technological advancements, expectations from the clothes individuals use while participating in sports have also increased. Along with characteristics such as durability, aesthetics, design, and fashion compatibility of textile materials, their functional features have also become important. Therefore, this research was aimed at merging sportswear with cosmetics. Particularly, cosmetic textiles, which merge two different sectors, namely cosmetics and textiles, have created new target groups and markets for the industry. It has become a rapidly growing segment of functional textiles used in health and hygiene sectors. The definition of cosmetic textiles by the European Cosmetic Directive is as follows: \"any textile article containing a substance or preparation that is released over time on different superficial parts of the human body, notably on human skin, and containing special functionalitiessuch as cleansing, perfuming, changing appearance, protection, keeping in good condition or the correction of body odors is called a cosmete-textile\" [1; 2]. This new trend in cosmetic textiles has acknowledged the excellence of nanometer-sized materials, which have desirable qualities [3]. The extracts of natural products and chosen essential oils, which possess healing properties as well as the ability to maintain the freshness and vitality of the wearer, are incorporated into textiles [1]. The primary technology to produce these cosmetic textiles involves controlled-release encapsulation. Encapsulation provides methods like microencapsulation, molecular encapsulation, and liposomes, thereby enhancing the new functionalities of textiles [4]. The encapsulated essential oils have a variety of uses in textiles for antibacterial, cosmetic, medicinal, and mosquito-repelling products [5]. Cosmetic textiles are garments that must maintain direct contact with the human body in order to fulfill their function. The active ingredients contained in these garments are released as a result of various effects, transferring the active substances to the human skin [6] and interacting with the skin based on temperature or pH changes, perspiration, scratching, and rubbing [7]. The substances within the capsules are released due to friction or pressure caused by the body's natural movements [1]. Cosmetic textiles have been researched by several authors. The studies in the literature are focused on slimming [6; 8], moisturizing [2; 9; 10], perfuming [11], relaxing [2; 12; 13; 14], vitalizing [12; 15; 16; 17], UV protection [4; 18; 19], and improving skin elasticity [10; 16; 20; 21; 22]. In the study conducted by [PERSON] and [PERSON] (2003), the effectiveness of products made from Texenergy fabric that claimed to be slimming, anti-cellulite, sweat-inducing, and hypoallergenic was investigated. The study was carried out with 21 volunteer women aged between 21 and 65 over a period of 8 weeks. Each volunteer was given three products and asked to wear these products for 8 h a day. Echography was used to measure the reduction in hypodermis thickness, laser Doppler flowmetry was used to measure microcirculation in the skin, and thermography was used to measure local skin temperature. At the end of the study, the volunteers stated that the products were effective in slimming and reducing cellulite [20]. [PERSON] et al. (2019) carried out a study with an innovative approach to cosmete-textile design by infusing textile fibers with dihydroxyacetone-loaded chitosan hydrogels cross-linked with genipin.