
Some of it you can do on your own by knowing your vein undertone. But as far as the warm autumn, spring stuff I think it depends on your genetic tones. Most stylists will tell you you’re not a true winter and things like that because you need very cold and pale tones to do that. But I think you can with like if your natural hair has red or blueish hues, your eye color, veins, and things like that
I do think that a system is used tho. And u need to be certified in order to do it. And it does make sense, that a certain color season works best with your skin tone. For the slight chance it works I’d lowk wanna know. And maybe I’d be able to see the difference when they do it on me?