Sodium bicarbonate on the face:

 

Although baking soda has certain properties, the risks to the facial skin barrier generally outweigh the potential benefits for most people.
Who should avoid applying baking soda to their face?
Avoid this product if you suffer from eczema, rosacea, active inflammatory acne, very dry or dehydrated skin, or if you have a history of sensitivity to skin products. Also avoid using it on injured skin, around the eyes, during pregnancy, or if you have conditions such as diabetes that affect wound healing. If in doubt, consult a qualified dermatologist who can give you personalized guidance, which is much safer than any home test.
Precautions if you decide to proceed anyway:

Despite the above precautions, some people still wish to test a well-controlled version. Follow these essential steps:
Perform a patch test on the inside of your arm or behind your ear 24 hours before applying to your face. Check for redness, itching, or burning.
Use the smallest amount possible: never more than 1/4 teaspoon of baking soda per application.
Always dilute generously with soothing ingredients that strengthen the skin barrier.
Limit contact time to 1 to 3 minutes. Never leave the product on as a traditional mask for 10 to 20 minutes.
Rinse thoroughly with warm water. Gently pat dry and immediately apply a fragrance-free moisturizer containing ceramides or hyaluronic acid.
Safety precautions if you decide to proceed anyway:
Despite the above precautions, some people still wish to try a highly controlled version. Follow these essential steps:

Perform a patch test on the inside of your arm or behind your ear 24 hours before applying to your face. Check for redness, itching, or burning.
Use the smallest amount possible: never more than 1/4 teaspoon
per application.
Always dilute generously with soothing ingredients that strengthen the skin barrier.
Limit contact time to 1 to 3 minutes. Never leave the product on as a traditional mask for 10 to 20 minutes.
Rinse thoroughly with warm water. Gently pat dry and immediately apply a fragrance-free moisturizer containing ceramides or hyaluronic acid.