Aw don't worry too much, mama! Honestly, a lot of us have done rebond, color, at Brazilian during breastfeeding din kasi kailangan nating magpaganda sometimes, hehe, the chemicals don't really pass into breastmilk in significant amounts, especially since your baby is almost 1 year na. That said, mas safe pa rin kung next time makakuha ka ng appointment when you can leave baby with tatay or lola for a few hours, or just make sure the salon is well-ventilated so you're not inhaling too much fumes, pero honestly don't stress yourself over today, you'll both be fine!