Difference between Ruby Laser and IPL

I am curious about the difference between Ruby Laser and IPL treatments. I understand that both procedures are effective for skin pigmentation, but I would like to know the differences in their principles and prognosis.

I’ve heard that Ruby lasers selectively target specific pigments and are used to treat melasma and blemishes, while IPL uses light of various wavelengths to address a wide range of skin issues like skin tone improvement, redness, and blemishes. I actually received IPL treatment when I was getting my melasma treated. I’m curious about the indications, actual effectiveness, pain levels, recommended treatment duration, and the differences in recovery times between the two.