Collagen and hair loss products surge as weight loss drug use grows

Demand for collagen, hair loss and skin-firming products has surged as the use of weight loss drugs continues to rise across the UK, according to new data from Lookfantastic.

The British beauty retailer found that searches for collagen products increased 762% year-on-year in 2025, rising from 1,174 to 10,129 searches. Meanwhile, demand for skin-firming products more than doubled between 2023 and 2025, while hair loss product sales increased 27% year-on-year in 2025 after rebounding from a decline just two years earlier.

The figures come as the use of GLP-1 weight loss medications continues to increase. According to research from the Institute of Grocery Distribution (IGD), uptake among UK adults almost doubled from 3.1% in June 2025 to 6% by March 2026.

The growing popularity of collagen, firming and hair loss products also coincides with an expanding body of research into the physical effects associated with rapid weight loss. While hair loss is not confirmed as a direct side effect of GLP-1 medications, studies have suggested that rapid weight loss, reduced calorie intake and potential micronutrient deficiencies may contribute to hair thinning in some users. Loose skin has also been identified as a common consequence of significant weight loss.

Francesca Elliott, CEO of THG Beauty Retail, said: "With the use of GLP-1s on the rise, many of our customers are increasingly proactive about addressing the physical changes that can come with rapid weight loss using GLP-1s, and our data reflects that trend."

"Rising demand for collagen, skin firming and hair loss products tells us that people are looking for accessible, effective solutions, and we are committed to offering the broadest possible range to meet that need."

Lookfantastic's findings come as interest in GLP-1 medications continues to reshape consumer spending across multiple sectors, from food and nutrition to fashion and beauty. As more consumers look to manage the visible effects of rapid weight loss, retailers appear to be responding with a broader range of products targeting skin health, firmness and haircare.

A recent study published in the British Medical Journal, which analysed data from 50,000 adults with type 2 diabetes, found GLP-1 users had a higher risk of hair loss than those taking DPP-4 inhibitors, although researchers suggested reduced calorie intake and micronutrient deficiencies may be contributing factors rather than the medications themselves.