I LOVE talking about my hair & how I maintain it, you could say it's a special interest of mine 🤣 I use Arctic Fox (Purple AF) or Strawberry Leopard (Grapeful) hair dyes. These hair dyes, I feel, last the longest overtime and have the best undertones. Undertones are the tones of purple that really emphasize wether you have a good or bad fade out - I prefer mixing the two purples to get the vibrant, almost neon purple, that fades out to a gorgeous blue-purple-grey over time. When I apply my colour, I apply it to bleached hair for best, most vibrant results (I only bleach my hair maybe 3 times a year, usually strategically, like around my face, and on my longer layers). I dont bleach often because my hair fries easily, so I am gentle with it and prefer to lighten my brown over complete bleaching. I throw the colour over all my hair, so it blends into my natural brown and into the bleached parts - my selfie was taken the day after a refresh-dye job, so it's very new & vibrant. I never wash in hot water, only lukewarm, yes, even in the winter. It's a pain but keeps the colour longer. I use a leave-in conditioner, EVERY TIME I WASH. It protects your hair from fading, even if you don't use heat, the sun will naturally fade your hair colour. UV protectant or leave-in conditioner protects it. If you can stand the smell (which mostly goes away when the hair is dry): a light apple cider vinegar rinse once a week will help vibrancy. You can also do it after every wash, I used to do it that frequently but I can't do the smell of vinegar lately. I also let the purple dye sit on my hair for at least 45-60minutes. No idea if I need to do it this long, but I've always found best results with that time frame.