Whether crocheted cotton garments need to be reblocked after every wash or laundry depends on the specific item and how it was blocked initially. Here are some factors to consider:
Blocking method: If the crochet garment was lightly blocked during the finishing process and the stitches are not overly stretched or shaped, it might not need reblocking after every wash. However, if it was aggressively blocked to achieve a specific shape or size, reblocking might be necessary to restore its original shape after washing.
Type of cotton yarn: The type of cotton yarn used can influence how much the garment changes shape after washing. Some cotton yarns have better stitch memory and hold their shape well, while others may become more relaxed and prone to stretching.
Washing method: How you wash the crocheted cotton garment matters. Handwashing with gentle handling and using cool water can help maintain the shape better compared to machine washing and drying.
Drying method: Air drying is generally gentler on crocheted cotton garments compared to using a dryer. High heat in the dryer can cause the fibers to relax and lose their shape.
Considering these factors, here are some general guidelines:
If the garment looks fine and retains its shape after washing, you may not need to reblock it every time. Instead, reshape it gently while damp and lay it flat to dry.
If the garment loses its shape or you notice any unevenness in the stitches after washing, reblocking may be necessary. Pin it into shape on a blocking board or use rustproof T-pins, and let it dry flat.
If the garment is delicate or made with fine thread, you should be more cautious with reblocking, as frequent stretching can weaken the fibers over time.
Consider spot-treatment: Instead of reblocking the entire garment, you can spot-treat specific areas that require reshaping.
Ultimately, the decision to reblock after each wash depends on your assessment of the garment's condition. When in doubt, it's better to be cautious and opt for gentle reshaping during drying to maintain the integrity of your crocheted cotton piece.