Benefits of banana for skin:

Banana fruit has nutrients that are essential for the skin. They contain significant amounts of vitamin C and B6 which plays vital role in maintaining the integrity and elasticity of the skin.
In addition, the large amount of antioxidants and manganese present in banana protect the body from damage caused by oxygen free radicals which lead to premature aging of the skin. So a major benefit from banana is younger looking skin. Banana has about 75 per cent water by weight in it. Thus banana helps hydrate your skin and prevents it from drying and peeling.
Here are some benefits of banana for skin:

1. Natural Moisturiser:

Banana is a great natural moisturiser for your skin. The Vitamin A present in banana restores the lost moisture and repairs the damaged, dull and dry skin. To instantly moisturise dry and dull skin, mash a ripe banana and apply it on your face. Avoid contact with eyes. Leave it on your skin for 20-25 minutes and then wash it away with lukewarm water. You will instantly feel skin looking soft and supple.                                                                                                                          If you extremely dry and flaky skin, you can also add honey to this face mask.
This banana and honey mask also helps in getting rid of skin pigmentation.Another easy face mask to get moisturised skin is to mash half a ripe banana and mix it with 1 tbsp. yogurt and 1 tsp. Vitamin E oil. Apply it generously on a clean face and wash it away after 30 minutes.

2. Glowing Skin:

Banana contains generous amount of Vitamin C in it that help in maintaining the natural and youthful glow of the skin. Here are some banana face masks that you can use to get that natural glow back on your face.

• Mash half a ripe banana and mix it with 1 tbsp. of sandalwood powder/paste and ½ tsp. of honey. Let it stay on your skin for 20-25 minutes and wash it with lukewarm water. This face mask is beneficial for oily skin as sandalwood helps in cleaning excess sebum and oil from the skin while banana keeps it moisturised.

• Mash one ripe banana and mix it with lemon juice form one lemon (approximately 2-3 tbsp.). Leave it on for 25 minutes. This mask is full of vitamin C which will get rid of dullness and help in reduction of spots and blemishes.

3. Banana Skin Scrubs:

• Take mashed banana and 1 tbsp. of sugar and mix them well. Apply it on your skin and rub it in circular motions. Banana will moisturise the dry skin while sugar granules will get rid of the dead skin

• Mash a ripe banana; add 2-3 tablespoons of oats, 1 tablespoon of honey and 1 tablespoon milk. Apply it on your face and leave it 5 minutes, then slowly rub it on your skin. Wash with cold water. In case you have extremely dry skin, you can substitute milk with fresh cream.

• Take half a ripe banana, 1 tbsp. coconut milk, 2 tbsp. uncooked rice, blend everything together to get a thick paste. Gently massage your face with this paste and wash with cold water afterwards.

• To make a body scrub, mash 2 bananas with 4-5 strawberries using a blender. Mix 3 tablespoons of sugar and use it as a body scrub when you take a bath. 

4. Anti-ageing:

Nutrients in banana helps in fighting wrinkles and keeps the skin youthful. For an anti-aging facial mask loaded with vitamins A and E, mash together an avocado and a banana. Leave on skin for 25 minutes and rinse. Skin will be soft and youthful. The vitamins E in avocados combined with the nutrients in bananas fight free radicals and repair damage. Another simple face mask to fight effect of ageing is to mash 1/4 banana until very creamy and add one teaspoon of rose water. Apply it on face and neck and wash it off after half an hour.
Sumber : http://www.stylecraze.com/articles/amazing-benefits-and-uses-of-using-banana-for-skin-and-hair/