October 2025 in “Journal of the Korean Society of Cosmetology” This study found that applying a hair mist with dandelion extract before heat perming improved wave efficiency, tensile strength, and hair cuticle condition compared to a base mist or no pretreatment, demonstrating the extract's protective effects against heat damage.
April 2023 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” This study compared the effects of direct heat perms and softening heat perms on hair, analyzing damage and morphological changes to understand their impact on hair fibers and provide foundational data for future research.
Using silicon circular iron on Korean women's hair increases hair thickness the most.
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January 2009 in “Sen'i Gakkaishi” This study found that using a bicomponent reduction system with TGA and DTDG for hair straightening limited hair damage by forming only thiol groups, while a TGA-only system formed more damaging mixed disulfide groups.
This study found that a fermented mixture containing Sasa Borealis leaf improved tensile strength and glossiness in hair damaged by heat perm and dyeing, suggesting potential as a cosmetic ingredient.