Best hair masque for highlighted hair?

[Epoisses]

Budget up to about £30.
I have chin length thick straight hair with cool highlights.

If your hair is highlighted, I’d look for a mask that gives plenty of moisture without making the hair heavy. I’d personally look at masks specifically made for dry/coloured or highlighted hair rather than a generic “deep conditioning” mask.
With a £30 budget, you should have quite a few good options. Also, because your hair is thick and straight, I’d focus the mask mainly on the mid-lengths and ends rather than the roots. 😊

I use two. Phillip Kingsley elasticiser and Kerastace Therme something. It’s in a jade green tub with a dark green lid. Both are excellent.

The Davines "Love" hair mask is INCREDIBLE. Leaves my highlighted, long, extremely dry hair soft and shiny, without weighing it down.

Goldwell Dualsenses Blonde & Highlights Anti-Yellow Treatment, Colour Brilliance is a really good mask about £15

Amika soul food. Or amika kure if you think your hair is damaged from highlights.