Hello everyone. I just need to know if it's okay to use The Regimen's AHA, and then ~4 hours later applying tretinoin over the areas I applied the AHA to. Is it okay? Will they counteract each other's effectiveness?

Just noticed I had some pretty bad scarring and applied AHA over them after cleansing, but didn't realize it was nearly 6pm and that my nightly routine of washing + tretinoin was nearing in 4ish hours.

Thanks in advance.