Mix together the lemon juice, hydrogen peroxide, Castine soap, and VERY hot water into a bucket.
Allow the clothing to sit for a minimum of 15 minutes.
Agitate them and let them sit for a couple of hours. Ring them out under cool running water and hang them to dry in the sun.
Hot water helps brighten whites. Lemon juice and hydrogen peroxide are natural bleaching agents. Combined with the whitening power of the sun – you have a winning combo!
You would need to purchase organic hydrogen peroxide. You’ll also need to double-check the labels on the castile soap to ensure that it is labeled organic as well.