Cherryredcurly: I lighten the roots with a weak peroxide only box dye (Nutrisse Radiant Blondes) then apply a high pigment semi permanent (La Riche Directions, like Manic Panic). Mainly used Rose Red which is a berry red colour, in the process of switching to Cerise because I want lighter and slightly pinker.

Foe years I used a permanent red box dye (Schwarzkopf Live) but 'refreshing' the lengths for five minutes each time caused a lot of damage.

You can bleach right over a heavy coconut oiling which is anecdotally reported to reduce damage, I prefer to add a tablespoon of oil to the bottle tho. Research suggests hydrolysed wheat or soy protein also reduces damage.
2a-2c, medium texture, porous/ colour treated. Three years CG. Past bra strap length heading for waist.

CO-wash: Inecto coconut/ Elvive Volume Collagen
Treatments: Komaza Care Matani, coconut/ sweet almond/ fractionated coconut oils, Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss Ultimate Volume, various Elvive
Styler: Umberto Giannini jelly, Au Naturale styling gelee
Flour sack towel, pixie diffuse or air dry.
Experimenting with: benign neglect