#balayage

instead, try mini balayage - white or grey tips to create a slight gradient. just going bright white all over won't have the desired effect and will fry your hair completely. such an extreme makeover is only for sharp yang types that can gel it down afterwards. that's why lucky blue smith (not endorsing his recent trad shtick, just using him as a prominent example) got famous back in the day for going full cool toned platinum - he is a Dramatic type.

keep in mind that bleaching it first will leave a warm tone unsuitable for winter. purple shampoo helps to create cool tips. hair crayons or liquid hair chalks (temporary, nice color pops = very bright winter-themed!) could also be used creatively here once the bleached tips are in place, even though the result is not professional, more DIY. since bleaching is always damage, i would go for well-made clip in extensions to try what works first. curly or wavy of course, romantics weren't put on this earth to do pin straight hair.

you have to be certain pure (!) R is your type for this, bnw balayage will look outdated on any other type except winter soft naturals, and it has to be subtle: not 50% black 50% white, that would be dramatic, think cruella de vil. see how dramatics use colors in fully seperate compartments, not slow gradients? glenn close!

also, going too far up in seperate strands will be gamine-adjacent, and looks like racoon hair on romantics (TR taemin is the best example here, balayage > stripes): pure R is the type that needs the most delicate styling of them all, since pure D as their kibbe-opposite benefits from the most drastic styles. still, even if this is hard to achieve, i think bright winter romantics can easily do this style if they wear it shorter (the picture below is SD length, romantics go above the collar bone tbh):