Spray Tanning

Explanation
Dehydroxyacetone is the active ingredient in tanning products. When applied to the skin, it reacts with the amino acids in the dead skin cells on the outermost layer of the skin, resulting in a temporary browning or tanning effect. Melanin is the pigment responsible for the natural color of the skin, hair, and eyes, but it is not the active ingredient in tanning products. Hydroxyacetone is not a recognized ingredient in tanning products. Dead skin cells are not an active ingredient but rather a component of the skin that can be affected by tanning products.

Explanation
Dehyroxyacetone is a colorless sugar. This means that it does not have any pigmentation or color. It is a type of sugar that is commonly used in self-tanning products and is responsible for giving the skin a tan or bronze color when applied. Despite its name, it is not a chemical or a nail enamel remover, but rather a naturally occurring substance that is derived from plants.

Explanation
Severe asthma is a contra-indication to spray tanning because the chemicals and fumes from the tanning solution can potentially trigger an asthma attack or worsen respiratory symptoms. People with severe asthma have sensitive airways and are more prone to experiencing breathing difficulties or allergic reactions when exposed to certain substances. Therefore, it is not recommended for individuals with severe asthma to undergo spray tanning to avoid any potential health risks.

Explanation
A full body spray tan typically takes around 30 minutes to complete. This process involves evenly spraying a tanning solution onto the entire body, which needs some time to dry and develop. While the actual spraying may only take a few minutes, the drying time is essential to ensure that the tan sets properly. Therefore, 30 minutes is a reasonable estimate for the duration of a full body spray tan.

Explanation
PSI stands for "Pounds per Square Inch". This unit of pressure is commonly used in industries such as engineering and manufacturing to measure the force exerted on a square inch of area. The abbreviation "PSI" is derived from the combination of the unit of force, pounds (lb), and the unit of area, square inch (in²). It is important to note that PSI is not equivalent to other units such as pounds per square mile or pounds per stone inch, which are not commonly used in the same context.