There are these videos which is like some sort of 'hypnosis' thing for your subconscious mind. It plays these frequencies with an inaudible voice in the background that your subconscious can hear.
Basically, they're used for relaxation, confidence, weight-loss, sleep-even hair growth. It's scientifically proven and I've seen some results posted by regular people, so it works after some weeks.
There are some videos which change your eye color. I've seen some really extreme ones like, brown->green, or blue->violet; but since I'm aware that I shouldn't alter anything on my face for it's altering Allah's creation, I've opted for lighter eyes.
I have dark brown eyes, but the video's purpose is to lighten it to a more 'hazel' color.
I'm not altering the eye color, just lightening it. But, I have my doubts, so is it permissible to use this method?