# How much product should I use

**By BR Keratin** · 2018-07-09

Most people wonder why a [keratin treatment](https://www.brkeratin.biz/collections) lasts so long. The reason is based on how it is done. A hair stylist will use heat in order to connect natural keratin with that one in your hair. After this, they will use a flat iron which will make your hair long and straight. The results will last for a long time. Keratin doesn’t wash out in a few days. Your hair will look perfect more than a month. Sometimes a keratin treatment lasts 4 months. As for products, the amount that should be used also depends on hair:

1) Shampoo 

Consumption: 15-20 ml

2) Treatment 

Consumption:

Short hair (shoulder-length): 30-40 ml

Medium length hair (shoulder blade length): 50-60 ml

Long hair (waist length and longer): 80-90 ml

3) Mask 

Consumption: 20-30 ml.

**Tags:** brasil cacau, brazilian blowout, keratin treatment, thermal reconstruction

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> Source: [BR KERATIN](https://www.brkeratin.biz/blogs/news/how-much-product-should-i-use)