Do you know about scalp collagen?

I started dyeing my hair early due to my husband's genetics.

Since I've been dyeing my hair for over 20 years since I was 20... it hasn't faded either

It looks like the hair dye isn't taking well... it seems like it's being dyed unevenly, but

Compared to hair I've dyed for over 20 years, genetic hair loss!!!

Only my husband is holding on well and abundantly.

Now that I think about it, there's shampoo, conditioner, and care, too.

I think it might be thanks to the collagen in the scalp and hair.

I think