Probiotics are live microorganisms that, when taken in the right amount, help maintain a healthy state of the body. Natural microorganisms usually make up first-generation probiotics, while genetically engineered strains are secondary probiotics. The importance of microorganisms to human health dates back to the era when Louis Pasteur first discovered the importance of fermentation and drew attention to the fact that consuming fermented foods could be beneficial for health and longevity. Oral and topical probiotics are used to treat skin conditions. Microorganisms live inside our body, both in the intestines and on the skin. Commensal bacteria play a vital role in human health; they also help maintain a healthy immune system. The skin microbiome consists of several types of microorganisms. Any imbalance of these microorganisms leads to skin diseases. Probiotics are well known for their clinical use in certain skin diseases, and probiotic bacterial therapy may have great potential in the prevention and treatment of several skin diseases [3]. Studies have established a link between a disrupted gut microbiome and inflammatory skin diseases, thereby increasing the potential of oral probiotics as a treatment option for skin disorders [4]. However, there is very little information and clinical studies that have examined the effectiveness of topical probiotic products. The use of probiotic bacteria can help strengthen the skin natural barrier by having a direct effect at the site of application. This may be due to resident bacteria and probiotic bacteria that produce certain antimicrobial aminopeptides that promote the skin's immune response and help eliminate pathogens. Some cosmetic preparations can contribute to the maintenance of a normal skin microbiome, being selective in their activity [5]. Topical probiotics have been known to be used to support a healthy skin microbiome since the early 20th century, and the last decade has seen a dramatic increase in commercially available topical probiotics [6]. However, despite the growing popularity of these topical agents, there are currently insufficient clinical efficacy trials to establish their clinical efficacy, so we aimed to write a detailed review on the use of probiotics in the treatment of skin diseases. In our article, we have detailed information about the normal skin microbiome, various skin disorders, and the topical probiotics commonly used to treat these skin conditions.