The best use of TSGS perfume is to spray onto skin, hair or clothing.

Avoid spraying perfume in or around eyes.

I package my larger perfumes in amber bottles to help protect the perfume. To make perfume last longer, store it in a cool, dry, dark place and avoid direct sunlight, heat, and humidity. Heat and light can break down the fragrance molecules, affecting the scent.

The bathroom is not ideal for storing perfume because of the changes in temperature and humidity. The humidity can oxidize the perfume's ingredients, causing the scent to change or smell off. 

Different fragrance oils naturally have different colors and can affect the final color of the perfume product.