It also triggers a chain of responses that can lead to facial redness and acne flare-ups.

它也引发一连串的反应，可导致面部红斑和痤疮。

youdao

Two days later, she developed abnormal movements, confusion, incoherent speech, sweats, facial redness, hyperreflexia, tremor and muscle spasms in all of her limbs.

两天后，她逐渐出现运动异常、混乱、语无伦次、出汗、面部发红、反射亢进、四肢震颤和肌肉痉挛。

youdao

There was no evidence of facial cuts, infections, redness or irritation, the company says.

WSJ: Sonic Facial Brushes: Deep Cleaning Faces at the Speed of Sound