"reduce exposure" is correct and can be used in written English.
You can use it when referring to reducing the amount of exposure to something—for example, reducing exposure to sunlight to avoid skin damage.
Fortunately, there are ways to reduce exposure to PAHs.
But, she adds, there are steps that can be taken to reduce exposure to contaminated dust.
First, reduce exposure – halve the time you spend with family and you can halve the arguments.
Consumption of organic foods may reduce exposure to pesticide residues and antibiotic-resistant bacteria".
Environmental improvements reduce exposure and reinfection by increasing access to clean water and improving basic sanitation.
Forecasts of hazardous air pollution are crucial to help reduce exposure.
How can we reduce exposure to the political risks we have identified?
Some do, and it's absolutely critical to identify and reduce exposure to them.
Using furniture and products that emit less formaldehyde can help reduce exposure indoors.
Darwin also noted that the Yaghan adopted a squat position when stationary, to reduce exposure to wind and rain.
Scrape into a lidded freezer box, cover with waxed paper to reduce exposure to air and freeze to harden.
