Every time a got from shower my whole body itches...

Dear Customer
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What is the treatment of the itching after shower ?

this condition isnt a medical condition , the main possible and easy option to relieve this itching is by use topically any moisturizer such as oils or specific products for body moisturizing 
- avoid heavy perfumed products , and use more natural and simple products 

General advices to avoid itching after showers :

1. dont shower for too long ( not more than 10 mnts )
2. dont use so hot water during shower
3. if you shower many time everyday , its better to slow down and reduce shower times 
4. avoid heavy rubbing to your skin during shower or drying your self 

Why does your body itch after shower ?

the most common cause is body dryness , because shower and excissve washing out or rubbing lead to remove the important oil and content to protect your skin , which lead to dryness then itching 
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Kind Regards