With light pressure, a soft bristled brush is much safer than firmer bristles. These are less likely to scratch the skin. However, start with a small patch of skin and see how your skin reacts. If you notice severe irritation or redness that lasts for hours, dry brushing might not be the best option for you.
Instead, try silicone brushes, which don't scratch the skin. These are best for use in the shower and offer safer exfoliation for sensitive skin and acne prone skin.