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the claim

The decomposition of melanin pigment in hair is responsible for the change in hair color during the bleaching process.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
2 sources for · 0 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 the decomposition of melanin pigment in hair is responsible for the change in hair color during the bleaching process?

Yes. The claim that hair color changes during bleaching due to the decomposition of melanin pigment is well-supported by scientific literature regarding the oxidative degradation of hair pigments.

Verdict: SUPPORTED · 2 sources for, 0 against · Last checked

The analysis

The retrieved papers consistently support the scientific understanding that hair bleaching involves the chemical oxidation and degradation of natural hair pigments (melanins), leading to color change.

Evidence for · 2
Alterations promoted by acid straightening and/or bleaching in hair microstructures.
2023
Identifies human hair as a biopolymer containing keratin, lipids, and pigments (melanin) that undergo structural and compositional alterations during bleaching treatments.
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CRRC, L., RJS, L., ACC, B., RAA, C., MVR, V., HN, B., & CLP, O. (2023). Alterations promoted by acid straightening and/or bleaching in hair microstructures.. doi.org. https://doi.org/10.1107/s1600576723005599

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More for · 1
Carbonylation of hair proteins: A robust biomarker of molecular and structural oxidative damage in hair fibres.
2025
Discusses chemical bleaching oxidation processes that target hair pigments and proteins, confirming the role of oxidation in altering hair color components.
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C, G., S, B., J, H., A, B., A, C., & M, B. (2025). Carbonylation of hair proteins: A robust biomarker of molecular and structural oxidative damage in hair fibres.. doi.org. https://doi.org/10.1111/ics.13052

What does the evidence say?

The retrieved papers consistently support the scientific understanding that hair bleaching involves the chemical oxidation and degradation of natural hair pigments (melanins), leading to color change.

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