Mayonnaise is used for cooking, but it seems that this product has other uses as well, one of them being hair care.
A popular YouTube user posted a video showing how to apply mayonnaise as a hair mask.
If you are struggling with splitting and degraded hair, it is worth trying the following experiment. All you will need is mayonnaise, a hairdryer, a towel and water.
Rub mayonnaise into your hair making sure to reach all over your hair, and then cover your hair with a bag and warm it with a hairdryer. Leave the mask on for 20-30 minutes, and then wash your hair.
Below is a video clip that demonstrates the process.