I think highlights will be less damaging, because they need less touch ups, and you're not bleaching your whole hair, just parts of it.
But, you have to consider if the colour is worth all the damage to your hair. Your hair will be likely to be more porous and dry and you can also suffer from breakage.
highlighted 3a hair. Fine strands, medium to high density. Probably high porosity. Growing uit bad layering and aiming for waist lenght!
Pre-poo: coconut oil
wash: CJ Daily fix or SheaMoisture Coconut&Hibiscus
RO + LI: different every time
Styler: CJ Pattern Pusha, CJ CIAB
dislikes: glycerin in low dews, scissor happy stylists, magnesium sulfate
(modified) CG since june 25, 2012
Hiarfinity + extra MSM since March 5., 2014
SL - APL - BSBL- BSL - MBL - WL (stretched)