A new study by Treatment Rooms London, a specialist hair transplant clinic, reveals that biotin is the most searched-for hair growth supplement in the UK, with an average of 18,938 monthly searches. The research, based on Google Keyword Planner data over a 12-month period, analysed search terms such as “biotin for hair” and “does biotin help hair growth” to identify which nutrients attract the most public interest in relation to hair health.
Biotin, also known as vitamin B7, leads the ranking, followed by vitamin A with 15,497 searches. Collagen comes third with 7,243, while folic acid and vitamin E register 1,768 and 1,671 searches respectively. Zinc, vitamin D, omega-3 fatty acids, magnesium, and iron complete the top ten, each contributing to hair health through different biological roles. For example, vitamin A supports cell growth and sebum production, while collagen is key for hair structure. These figures reflect a growing consumer focus on supplement-based approaches to addressing hair thinning and hair loss.
Specific search terms show how consumers are engaging with these nutrients. The phrase “biotin for hair” garners 11,000 monthly searches, followed by “vitamin a hair growth” at 6,250 and “vitamin a for hair” at 5,800. Questions such as “does biotin help hair growth” and “does collagen help hair growth” draw over 1,000 searches each, suggesting that many people are looking for evidence behind popular claims. Related product-based queries, including “collagen hair mask” and “biotin hair serum”, also rank among the top 50 most searched terms.
Dr Roshan Vara from Treatment Rooms London commented on the findings: “These search trends reflect what we often hear from patients concerned about hair loss or thinning. Biotin has been popularised in hair growth supplements, but the evidence for its effectiveness is mainly anecdotal except in cases of actual biotin deficiency, which is rare. Vitamin A is essential for cell growth, but too much can actually contribute to hair loss rather than prevent it. The high search volume suggests many people may not be aware of this balance. What’s particularly interesting is the growing interest in collagen for hair health. While collagen provides the amino acids needed to build hair proteins, taking collagen supplements doesn’t necessarily mean these amino acids will be directed to your hair follicles. For those concerned about hair loss, I would recommend consulting with a specialist before starting any supplement regimen. Many factors affect hair health, including genetics, hormone levels, stress, diet, and certain medical conditions. Addressing the root cause will always be more effective than simply taking supplements.”
Interestingly, vitamin C, despite its general health reputation, ranks lower with only 651 monthly searches related to hair growth. The study highlights a growing interest in nutritional solutions for hair care but underscores the importance of expert guidance before making decisions based on trends.