The management of hair loss, includes prevention and treatment of alopecia, baldness, and hair thinning, and regrowth of hair. Prevention Scratching of itchy scalp may contribute to hair loss. Health Body weight Prevention of obesity helps. Obesity is linked to hair thinning. Healthy diet Oils with fatty acids that has been studied to prevent dermatitis includes: Corn oil: Linoleic acid (LA) Fish oil: Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) Hemp seed oil: Linoleic acid (LA), and alpha-Linolenic acid (ALA) Alternative medicine The scalp must be cleaned from sebum, sweat, and dirt, prior to topical application, for agents to penetrate it. A 2020 systemic review on agents used to treat androgenic alopecia found that: Oral supplementation of vitamin A, B, C, D, E, and trace element iron, selenium, and zinc, will prevent androgenic alopecia caused by malnutrition. Multivitamins can be used. Topical application of onion juice, rosemary oil, saw palmetto, pumpkin seed oil, procyanidin, garlic gel, capsaicin, caffeine, amino acids, and curcumin helped prevent hair loss. Heating, ventilation, and air conditioning (HVAC) Humidifier A humidifier can be used to prevent low indoor humidity during winter (especially with indoor heating), and dry season. Commonly, patients with seborrhoeic dermatitis experience mild redness, scaly skin lesions and in some cases hair loss. Low humidity can cause adverse health effects and may cause atopic dermatitis, and seborrhoeic dermatitis. Treatments Combination therapy Combinations of finasteride, minoxidil and ketoconazole are more effective than individual use. Combination therapy of LLLT or microneedling with finasteride or minoxidil demonstrated substantive increases in hair count. Medication Add-hocs The topical bioavailability of synthetic medicines such as antiandrogens, as well as phytochemicals such as quercetin, has been improved with incorporation of drugs in nanoparticles, or microneedling. Synthetic medicine Treatments for the various forms of hair loss have only moderate success. Three medications have evidence to support their use in male pattern hair loss: finasteride, dutasteride and minoxidil. They typically work better to prevent further hair loss than to regrow lost hair. They may be used together when hair loss is progressive or further regrowth is desired after 12 months. Other medications include ketoconazole, and in female androgenic alopecia spironolactone and flutamide. Baricitinib In June 2022, the FDA authorized baricitinib for the treatment of severe alopecia areata. Minoxidil Minoxidil, applied topically, is widely used for the treatment of hair loss. It may be effective in helping promote hair growth in both men and