Washing Face After Jessner Peel?

You can wash your face immediately after a Jessner's Peel with a gentle cleanser without causing any harm or compromising efficacy. However, you will get better results if you wait until the following day. This allows the peel as well as any products applied afterwards to penetrate the skin. Make sure to stay away from cleansers or creams containing any exfoliating agents for at least 3 days. Always apply a good moisturizer and sunscreen with SPF 30 or higher after cleansing. more

Jessner's  peel is one type of superficial peels. There is no need for neutralization, (unlike the glycolic acid peels). You can wash your face a few minutes after the peel. This should have no effect on efficacy of the peel.