The possible skin lightening properties of butylated hydroxytoluene were investigated by patch testing and a normal usage test on black-skinned volunteers. No evidence of depigmentation was observed in this series.
Bentley-Phillips B, Bayles MAH. Butylated Hydroxytoluene as a Skin Lightener. Arch Dermatol. 1974;109(2):216–217. doi:10.1001/archderm.1974.01630020032007
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