Effect of alpha-tocopheryl acetate, retinyl palmitate, and phytantriol on hair protection

A hair essence containing -tocopheryl acetate, retinyl palmitate, and phytantriol (TRP-hair essence) was prepared. TRPhair essence was excellent in thermal stability to the extent that it did not harden at all even at 210 o C. TRP-hair essence potently protected the hair from heat stress, significantly reducing the protein leakage in heat-treated hair (p <0.001). Treatment of TRPhair essence to dyed human hair significantly protected hair against heat stress (p <0.05) as well as improved hair cuticle and color persistence (p <0.05). In addition, as a result of directly treating human hair with TRP-hair essence, the cuticle and tensile strength of human hair were significantly improved (p <0.05). These results suggest that TRP-hair essence can be effective for hair protection and hair quality improvement.