It can be used as a supplementary bar in removing dirt along with detergent powder.
It is a product of hindustan lever which is a very reputed brand in India.
Firstly put your clothes in a pot of water with detergent powder like tide plus.
Then after few hours while washing, rubbing with rin bar in places like collar where dirt gets deposited can become very effective for cleaning.Dirty place can be very clean by few strokes of rin.
If you do not use it clothes can not be cleaned as required.So it is very effective for limited use.It cost rs10 for 150gram plus 10gram free now.Other soap like lux or lifebuoy is not so effective and costly.I like rin bar and recommend it for everyday use.Since it is used. In specific places of your cloth it requires very little quantity.