THE SCALP CARE MARKET IS ON TRACK TO NEARLY DOUBLE BY 2030

The scalp microbiome segment of haircare was valued at roughly US$1.14 billion in 2025 and is projected to reach approximately US$2.21 billion by 2030, growing at an 11.3 percent compound annual rate, according to industry analysis published this year.

A genuinely fast growth trajectory for what was, until fairly recently, a niche corner of the haircare aisle.

That growth mirrors, and largely borrows its scientific framing from, skincare's own microbiome moment from several years earlier: the idea that the scalp hosts its own bacterial ecosystem, and that supporting rather than aggressively stripping that ecosystem produces healthier hair growth conditions over time. US search interest in "scalp care trends" specifically reached a five-year high in March this year, according to market research tracking the category - a genuine signal of mainstream adoption rather than a niche enthusiast interest confined to specialist forums.

Brands including Act+Acre and Divi have built their entire positioning around this scalp-first premise, incorporating active ingredients more commonly associated with premium skincare - hyaluronic acid, niacinamide, salicylic acid, peptides - directly into shampoo and scalp-serum formulations, taking share from more traditional shampoo brands built around hair-fibre benefits rather than scalp condition specifically.

The category's rapid growth comes with a genuine caveat flagged by industry analysts themselves: scalp microbiome claims are among the most exposed to scrutiny in personal care, given how much of the underlying scalp-bacteria research remains considerably earlier-stage than the skin-microbiome science skincare brands have spent years building a more substantial evidence base around. Expect regulatory and marketing scrutiny of specific microbiome claims to intensify as the category's dollar value keeps climbing.