Garnier shampoo bar

I’ve been wanting to start using shampoo bars for multiple reasons

1) it’s better for the environment

2) they last longer than bottles of soap

3) I only wash my hair 1-2 times a week so they would last a LONG time for me

I’ve heard of some good brands with good ingredients but I just saw a TikTok of drew Barrymore using garnier shampoo bars

I have no idea what’s a good ingredient and what’s a bad ingredient in shampoo especially when it comes to drug store

Does anyone know if these are okay for your hair?? Or are the ingredients shit since it’s garnier?