A sensory therapy brush is used to help people, especially children, who have sensory processing. It provides deep pressure when brushed on the skin, which can help in the following ways:
1. Calming Effects: The deep pressure can help calm and soothe people who feel anxious or overwhelmed by sensory input.
2. Reducing Sensory Sensitivities: It can help people become less sensitive to touch, making everyday activities more comfortable.
3. Improving Focus and Attention: Using the brush can help increase concentration and focus, especially in children with attention difficulties.
4. Promoting Self-Regulation: It can help people manage their emotions and reactions better, leading to improved behavior and coping skills. 
These brushes are commonly used in occupational therapy sessions to help people with conditions like autism, ADHD, or sensory processing disorder.