You must have heard a lot of people talking in favour of using rice water for hair, but you will also find a lot who have experienced negative results and side effects. So some common side effects of rice water on hair are- flaky buildup on the scalp, protein overload on the hair cuticle, dryness, and even hair breakage. All these happen due to the presence of heavy starch components in rice water which leads to breakage and brittleness over time. So if you have low-porosity hair, then avoid using rice water.