Buy second hand clothes or “organic“ clothes?

Hi everybody,

I wanted to know if it’s better for the environment to buy second hand clothes or to support businesses that produce organic clothes by buying their items and hopefully help increase the demand for organic clothing? I’ve been searching for a long time but so far I haven’t found any clothes that are 100% natural and organic. Most clothes I found were made of organic cotton but also synthetic fibers (sometimes recycled) or dyed with chemical dyes. Are there even 100% natural and organic clothes available?