Can I still perm my hair after I put red highlights?

you could but it may make your highlights darker or lighter

Can I still perm my hair after I put red highlights?

yes, but just don't do to many chemical processes to close together...meaning after you do that don't have any other chemical processes for like six months...except for touching up the highlights on new growth (your roots).

F.Y.I. Always perm first then color because the chemical perm solution will alter your color, it usually lightens it.

Can I still perm my hair after I put red highlights?

you can perm it after but your red will fade a lot because perm strips colour out of hair it is better to perm first then colour a week after