when can I start using regular washing detergent* on my daughters clothes

I started when my son was three months I used dye and fragrant free the first three a

thanks @mah_mammi I use dreft now just wanted to see how long I had to use it

Dreft is more for the smell it doesn't clean the clothes properly. Depending on your daughters skin you can start when ever you feel is appropriate

I've always used gain. Since she was born and her skin was always fine with it. I never used that fancy stuff.