Unless you have a naturally light-blond hair color, going gray means bleaching your hair to strip out the color before dyeing your hair. Even when it's done by a professional, bleaching your hair means you're going to have some breakage and damage. Basically, your hair may become thinner, and you may need to cut off some length to keep it in a healthy state. To minimize the damage, Arteca suggests following the tips above.
Here Is Everything You Need To Know About Going Platinum Blonde
Even when it's done by a professional, bleaching your hair will damage it a bit. Because going platinum blonde usually means at least two rounds of a bleach process (and potentially a third or fourth process depending on how your hair reacts to bleach), it's even more damaging than the usual blonde highlights. To minimize damage Arteca suggests following the tips above.