Is it normal to brighten ur labia area

what is the recommanded products to use to whitening private area ?
there is some products such as : 
1. okeny`s Whitening Cream
2. Amaira Lightening Serum 
3. Pearl Queen Sensitive Area Whitening Cream
how to use the first mentioned products :
1. first wash your private area 
2. use the products every other day 
3. if you private area skin wasnt irritated , you can use it more , but not more than 5 times a week 
4. put the product on the private area for 30 mnts only every time , then wash it 
general advices :
1. if you have infection or skin disease , treat it first then whitening the area 
2. pay special attention to that area hygine