Hydrogen, a two-atom gas with unique properties such as colourlessness, odourlessness and non-metallicity, has gained significant interest due to its potential therapeutic applications. Due to its small molecular size, it is an effective antioxidant, capable of neutralizing reactive oxygen species (ROS). The aim of the article was to present methods for the application of molecular hydrogen in cosmetology, especially in hydrogen purification treatments. Its positive effects on reducing skin rashes, increasing hydration and reducing excessive sebum secretion especially in people with acne vulgaris were presented. Hydrogen shows promise as a therapeutic agent in the context of oxidative stress, which disrupts normal skin function and accelerates the ageing process. Molecular hydrogen’s adaptability makes it highly attractive for use in several therapeutic applications within the fields of medicine and cosmetology.