Okay, so I've been eyeing a fun, vibrant hair color for a while now, something that screams personality without being a huge commitment. After a lot of scrolling and research, I decided to take the plunge with RE BY KISS Semi-Permanent Hair Color in Raspberry Prism (shade T450 Level 5). And let me tell you, it was an adventure! If you're considering this shade, or just curious about semi-permanent dyes, keep reading for my honest thoughts and tips. First off, why Raspberry Prism? I was drawn to the name itself – it just sounded so unique and beautiful. I wanted something that wasn't just red, but had those cool, almost fuchsia undertones. The packaging mentioned 'MOE WITH WATER VERA' and it came in a generous 148mL (5 US fl.oz) bottle, which felt like plenty for my medium-length hair. I always recommend doing a strand test and a patch test, even with semi-permanent dyes, just to be safe and to see how the color will truly look on your hair. My hair is naturally a medium brown, and while semi-permanents don't require developer, I knew I wouldn't get the super bright results without some pre-lightening. So, I did a quick bleach session to a level 8 blonde first, which I think is crucial for this vibrant a color to really pop. Application was pretty straightforward. I made sure my hair was clean and dry (or slightly damp, depending on preference, but dry works best for maximum saturation). I sectioned my hair carefully, put on gloves, and started applying the Raspberry Prism dye evenly from roots to ends. The consistency of the dye was nice – not too runny, which made it easy to work with and minimized drips. I left it on for about 45 minutes, a little longer than the recommended time, because I really wanted that intense saturation. While waiting, I couldn't help but get excited about the potential results! Rinsing it out was... a colorful experience! Lots of pink water, which is totally normal for vibrant semi-permanent dyes. I rinsed with cool water until the water ran mostly clear, then followed up with a color-safe conditioner. The moment I blow-dried my hair, I was in love! The color was exactly what I had hoped for: a stunning, rich raspberry with beautiful purple-pink undertones that shimmered in the light. It was bold, playful, and totally transformed my look. Now, for the aftercare and longevity. As a semi-permanent, it's designed to fade. To help maintain the vibrant Raspberry Prism shade, I've been washing my hair with cold water and using sulfate-free, color-safe shampoos and conditioners. I also try to wash my hair less frequently and incorporate dry shampoo on in-between days. Heat styling can also cause fading, so I've been mindful of using heat protectant and lowering the temperature on my tools. I've noticed it's fading beautifully into a softer pastel pink, which is also really pretty. Overall, my experience with RE BY KISS Raspberry Prism was fantastic, and I'd definitely recommend it if you're looking for a fun, temporary color change!