Hands down it would be my Penetraitt by Sebastian!
With my hair being colored blonde Penetraitt is amazing for strong shiny hair.
It is a deep strengthening and repair masque. This product also repairs damage from heat, and chemicals.
Penetraitt is designed for daily use, but is a deep conditioner, and when I'm really feeling froggy I apply the product to my hair and sit underneath my hair steamer for 20 to 40 minutes.
Give it a try and let me know what you think!
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