Question

two application of buffer solution​

Answer 1

The body uses buffers solution to maintain a constant pH. For example, blood contains a carbonate/bicarbonate buffer that keeps the pH close to 7.4

I hope that helps to you

Answer 2

many shampoos use ciri acid or sodium citrate to maintain slightly acidic pH balance

baby lotions are buffered to pH of about 6

many dyeing process uses buffers to maintain the correct pH for various dyes