"masked with" is correct and usable in written English.
You can use it when expressing that something is covered or hidden by an object. For example, "My work was masked with a veil of secrecy."
This smell can be masked with deodorant.
It is taken orally and then its presence masked with a cream.
She seemed weirdly masked, with an upside-down face, from where Ray stood, slightly behind her.
Howard's cheek-to-cheek grin is sometimes masked with a glare.
"Good food cannot be made of inferior ingredients masked with high flavor".
It all works: the urge, the sass, the sleaze masked with the pitiable presentation.
Their faces are masked with tiny eyeholes and their genders are unidentifiable.
"All the guards were masked with Halloween-like masks, and so were the Medics," he writes in one chapter.
The identity of the North Korean ship had been masked with a Chinese name and home port.
diameter n-type polished wafers of (100) crystal orientation masked with a thermally grown oxide, 0.08 0.87 μm thick.
Likewise, your teens should be an exciting time, but it can be hard to enjoy them when masked with spots.
