Hi,
Maintenance products for post-treatment of acne scars based include
- Topical retinoids (tretinoin, adapalene)
- L-ascorbic Vitamin C
- AHAs
- Retinols
The relative effectiveness of the above topicals may need to be balanced against its irritability index, hence proper assessment by your attending doctor factoring in how recent the treatment was done, your skin sensitivity index, prior use and tolerability is recommended.