A. Is it really beneficial to facial skin?
Beer is used for face wash and shampoos. Yes, it has beneficial effects on the skin, the use of beer for skin dates back around 4000 years, when the Egyptians used it for skin cosmetics.
B. What are the ingredients in beer to make our face glow and remove the dirt from our skin pores?
Beer is made up of the natural ingredients like barely(malted), specific yeast, starch and water. All these are fermented. Beer is a good medium to remove the dead cells and also balances the skin Ph.
The specific yeast (BREWER'S YEAST) is a micro-organism called Saccacromyces cerevisae, this rapidly dividing organism does not allow the acne producing bacteria to thrive on the skin. (https://www.ncbi.nlm.nih.gov/pubmed/2530145).
Use of beer to wash the face acts like a good skin cleanser and increases the skin tone and elasticity. The froth and the vitamins (riboflavin,biotin,B12,panthothenic acid) are a good medium to remove acne pores and reduce the incidence of acne flaring up. The brewer's yeast especially is good because it kills the bacteria that trigger the acne and also slow the production of sebum ( an oily secretion for the skin glands).
Lastly, beer also has 'XANTHOHUMOL' which has anti-cancer and anti-oxidant effect (much more than green tea), which is beneficial to the skin.
Some people recommend mixing beer with a few drops of lemon juice to open up the skin pores and give the glow and fresh look of skin that you are taking about.
It is also good for people who have a dry skin.
D. Are there are any side effects of washing the face with beer?
If you notice the natural ingridents there would be no major side effects. There are many commerical products like 'beer face mask' and brewer's yeast based skin cream for reducing acne. The side effects on skin is often from consuming/drinking large amounts of beer, thsi causes puffiness.
E.Is it true that washing the face with beer will change the skin color?
The skin color improves, it has been shown that the color of acne marks and spots reduce a shade lighter in a few weeks.
F. What are the precautions that one should take when using beer to wash the face?
One should use in moderation, avoid getting it into the eyes and ear. Some people worry about beer wetting the hairs, but no problem, Beer is a good protein source for nourishing hair and improving the shine.