Wash after every use to stop body oils and sweat from breaking down the elastane over time. If washing a bra or top with padding take out any removable pads and ensure clasps are fastened before washing to protect the garment. Use a gentle detergent free from bleach and stain removers to help maintain colour, and avoid fabric softener, as it coats the fibres and blocks the fabric's sweat-wicking performance.
Heat is activewear's biggest risk, as it breaks down elastane and causes the fabric to lose its recovery, so always skip the tumble dryer. Lay flat to dry instead, which helps the garment hold its shape and keeps that supportive stretch intact for longer.