Question

1. What's the solution ?
Dark patches appear on the skin after
exposure to the sun.​

Answer 1

1. In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent.
2. Also called sunspots, solar lentigines, or liver spots, people can develop dark spots on their skin after being exposed to the sun or tanning beds. Areas of the body that receive the most sun exposure, such as the face, hands, or arms, are most likely to develop sun spots.

Answer 2

Answer:

Hyperpigmentation is caused by an increase in melanin. Melanin is the natural pigment that gives our skin, hair and eyes their color. A number of factors can trigger an increase in melanin production, but the main ones are sun exposure, hormonal influences, age and skin injuries or inflammation.

Explanation:

Go out in sun by applying some lotion like Nivea UV body protection lotion