>>10971041the orange one at the timestamp is daiso brand "ほつれ止め液" which translates as anti-fraying liquid. it seems like it's mostly for fabrics and doll clothes
https://jp.daisonet.com/products/4549131717785the green one earlier in the video is anti-slip liquid, "すべり止め液", which is probably what you want for tightening joints.
https://jp.daisonet.com/products/4549131717792but the point of the video is that this shit costs only 100 yen, if you have to pay much more than that to import it you should probably just use something available locally. there are plenty of ways to tighten joints.
