Sunscreen
Sunscreens with gel and fluid textures made for humid weather, and the high PA ratings that come with them.
Available in the United States. No customs at your door.
Indian sunscreen has moved fast in the last few years and the formulations are genuinely different from the American ones. The textures skew to gels, fluids and water-based creams because the climate makes a heavy cream unwearable, and the finish is usually matte rather than dewy.
The rating to look at is PA, shown as PA+ through PA++++. It measures protection against UVA, the wavelength associated with ageing and pigmentation, and it is standard on Indian and East Asian labels while American ones often only say broad spectrum. If you have been looking for high UVA protection in a texture you will actually wear daily, this is the reason to look here.
One honest caution: sunscreen regulations differ by country, and a filter approved in India may not be approved where you live. That does not make it unsafe, but it does mean you are buying a cosmetic that was formulated for another market's rules.