Hello and welcome to healthcaremagic
First and foremost, you should use a sunscreen regularly to protect you skin from further
tanning. Apart from that practicing sun protective behavior like carrying an umbrella, avoiding outdoor activity between 10:00 AM and 3:00 PM etc go a long way in preventing further tanning.
UV A part of the electromagnetic spectrum is mainly responsible for tanning.
Therefore, a good sunscreen should have broad spectrum UV A coverage in addition to UV B coverage, in order to be able to prevent tanning and it needs to be applied in sufficient quantity and every 2-3 hourly.
A sunscreen with minimum 30 SPF would be adequate. It should mention both UV B and UV A coverage. Therefore it is important to select the right sunscreen for desired effects
It should be applied in the following quantity:
--3ml for face and neck(a little more than 1/2 teaspoon)
--3ml for each arm(a little more than 1/2 teaspoon).
A sunscreen should be applied every 2-3 hours.
A skin lightening cream containing one or more of the skin lightening ingredients e.g
kojic acid,
glycolic acid, Arbutin,
Magnesium ascorbyl phosphate,
Liquorice etc once or twice daily, can be used to gradually fade away the tan.
You could also undergo a few sessions of skin lightening peels (Yellow peels/
Retinol CT peel) OR Glycolic acid Peels, from a
dermatologist to improve the complexion.
regards