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the claim

Sulfates in shampoo cause hair thinning.

the verdict
CONTESTED PARTIAL
Recorded sources
1 source for · 3 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that sulfates in shampoo cause hair thinning?

Partly. The retrieved sources only partially address the claim: one review asserts that sodium lauryl sulfate can cause long-term hair damage, while several others merely frame sulfate-free shampoos as gentler or safer without testing hair thinning. None provides direct evidence that sulfates in shampoo cause hair thinning.

Verdict: CONTESTED PARTIAL · 1 source for, 3 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 1
A Review: Formulation and Evaluation of Herbal Shampoo
2025
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Waghole, V., Divekar, V., & Gawai, N. (2025). A Review: Formulation and Evaluation of Herbal Shampoo. doi.org. https://doi.org/10.22214/ijraset.2025.70274

Evidence against · 3
Formulation of Botanical Shampoo Infused with Standardised Mangosteen Peel Extract for Healthy Hair and Scalp
2023
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Sang, S., Liew, K. B., Lee, S., Keng, J., Lee, S., Akowuah, G. A., Tan, C., & Chew, Y. (2023). Formulation of Botanical Shampoo Infused with Standardised Mangosteen Peel Extract for Healthy Hair and Scalp. doi.org. https://doi.org/10.3390/cosmetics10040109

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More against · 2
Formulation And Evaluation Of Herbal Shampoo
2026
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Thakare1, V. N. P. D. M. S. B. K. V. K. M. (2026). Formulation And Evaluation Of Herbal Shampoo. zenodo.org. https://doi.org/10.5281/zenodo.20718005

Natural alternatives from your garden for hair care: Revisiting the benefits of tropical herbs.
2023
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SH, S., GA, A., KB, L., SK, L., JW, K., SK, L., JA, Y., CS, T., & YL, C. (2023). Natural alternatives from your garden for hair care: Revisiting the benefits of tropical herbs.. doi.org. https://doi.org/10.1016/j.heliyon.2023.e21876

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