Write the next sentence in the following story.

How to lighten blonde hair 
Use lemon juice. 
Lemon juice has be used as a natural bleaching agent in hair for a very long time. This is how it works: the citric acid in lemon juice opens up the hair cuticle and pulls out pigment, leaving hair stripped of color.

OPTIONS:
- This bleaches hair slightly darker, but is not as potent as the red-dye. To use lemon juice to lighten hair, hold the juice bottle in your hand; you can squeeze it gently, if you would prefer, but be careful not to over-squeeze the juice into your hair.
- Mix half a cup of fresh squeezed lemon juice with half a cup of water and pour into a spray bottle. Spritz the lemon juice mixture into damp hair, then sit outside in the sun for 30 minutes, as the sunlight activates the citric acid.
- It draws out pigment and bleaches hair. While lemon juice may not have colored hair, it will have blonde hair in the short time between applications.
- As a result, the hair cuticle closes like a pie and is saved from the bleaching chemicals. It is a truly beautiful color for blonde hair, so having lemon juice in your hair immediately helps it to work better.
Mix half a cup of fresh squeezed lemon juice with half a cup of water and pour into a spray bottle. Spritz the lemon juice mixture into damp hair, then sit outside in the sun for 30 minutes, as the sunlight activates the citric acid.