While the process of applying the chemical solution can be slightly uncomfortable, it is not painful. It can burn a little and feel a little 'stingy', but there's usually no pain. The level of discomfort is also managed by how many layers of the chemical solution your skin can tolerate. 

There is virtually no downtime, other than the fact that your skin may look a little red/sunburnt right after the procedure. You should also avoid sweating or going for outdoor activities in the sun for at least a day or two after the procedure. This is to prevent possible damage to your skin from harsh UV rays as your skin is at its most sensitive right after the peel. Otherwise, you can proceed as per normal after a session of chemical peel. 

Other than avoiding physical and/or outdoor activities for a day or two after the peel, you should also be careful not to introduce any harsh skincare products right after the peel (such as toners containing AHAs/BHAs, vitamin C serums, etc.). This is because your skin is very sensitive after the peel, and using active ingredients would not be advisable.

Your skin may also feel a little dry and flaky after the peel, and that's completely expected! Don't panic when it starts to peel. You can combat the dryness with using moisturiser as frequently as needed. But keep those itchy fingers away, you should not be picking or peeling at the dry skin!