Are we allowed to use moisturisers/face creams containing collagen?
Answer: Collagen is the most common protein in connective tissue, bones, tendons and skin of animals and fish.
Where fish/marine collagen is used, it would be acceptable for Muslims to use such moisturisers and cosmetics.
We should abstain from products where animal collagen is used as such collagen can be derived from non-Halaal animals including pigs.
And Allah Knows Best!