Simplify the following text for a Grade 2 native English-speaking person.
Original: Although there is no single `` correct '' technique for the formulation of a perfume , there are general guidelines as to how a perfume can be constructed from a concept . Although many ingredients do not contribute to the smell of a perfume , many perfumes include colorants and anti-oxidants to improve the marketability and shelf life of the perfume , respectively .
Simplified: Result of this , use of perfume is not so high .