Hindustan Unilever — No details of the date on which it was packed and caused damage to my hairs

Address:

8901030558016

I bought the sachet of clinic plus shampoo and when i was looking up for the date when it was packed it was mentioned that it is on the 'seal' but there were some of the numeric no. But of no use as they were not relating what i was searching for As i used that shampoo it damaged my hair and caused falling of my hair although being mentioned that ' it makes hair stronger'.