I have used streax hair serum for about 2 months.
I found: -
1.it makes your hair silky instantly. But if u will use it regularly, you will be a victim of hairfall problem
2.it leads to dandruff problem
3.use only on some occasions
4.good serum does not damage your hairs
Personal suggestion: use it occasionally
2.not for regular use
3.go for other good quality product