Centella asiatica is better supported as a skin-supportive botanical than as a hair-growth active. Its compounds have been studied in topical skin and wound-healing contexts, but those findings do not prove that centella in a rinse-off shampoo regrows hair.
What the evidence supports
| Evidence area | What it suggests | Limit for scalp shampoo |
|---|---|---|
| Topical/wound-healing reviews | Centella compounds have biologic activity relevant to skin repair and inflammation pathways | Wound treatment is not the same endpoint as scalp comfort or hair growth |
| Skin-barrier clinical research | Centella-containing topical formulas have been studied for hydration/barrier outcomes | Results belong to the tested creams/fluids, not every centella product |
| Hair-growth claims | Direct clinical support for rinse-off centella shampoo regrowing hair is limited | Do not translate skin research into follicle-regrowth claims |
For context, see the review Topical Application of Centella asiatica in Wound Healing and a double-blind clinical study examining centella/ceramide in skin-barrier improvement: Role of Centella asiatica and ceramide in skin barrier improvement. These support centella’s relevance to skin research, not a claim that shampoo grows hair.
Why the finished formula matters
Centella extracts vary in composition and concentration. Cleansing agents, preservatives, fragrance, pH and contact time can matter more to scalp tolerance than the presence of one botanical.
Centella and sensitive scalp care
A botanical can be well tolerated by many people and still irritate an individual. If sensitivity is the main concern, use the Sensitive Scalp Shampoo Guide and introduce one new scalp product at a time when possible.
Commercial bridge: use centella as one data point
Compare centella with niacinamide, hyaluronic acid, caffeine and other ingredients in the Shampoo Ingredient Encyclopedia. Then judge the whole product, not the botanical callout.
Vassia Labs Scalp Support Shampoo includes centella within a fragrance-free, sulfate-free and silicone-free formula for fine, flat and thinning-looking hair. Its role is cosmetic cleansing, scalp comfort and manageability, not treatment of alopecia.
Frequently asked questions
Is centella good for a sensitive scalp?
It can be a useful supportive ingredient, but tolerance depends on the entire formula and the individual.
Does centella grow hair?
Current evidence does not establish that centella in a rinse-off shampoo regrows hair.
Does skin-barrier research prove scalp benefits?
It provides useful rationale, but scalp products have different vehicles, exposure times and endpoints, so the result should not be copied directly.
