UV Degradation Solutions for Swimwear: Care and Service Life Advice
Care instructions decide whether uv degradation stays solved for the life of the swimwear, not just until delivery.
What shortens performance
colour fading and strength loss after sun exposure becomes obvious earlier when the garment is dried hot or washed with softener, because both attack the finish and the elastic. Because the fabric stays wet, stretched and chemically exposed for hours, target checks are made on a worn sample rather than flat fabric alone.
Washing guidance
Wash at 30 degrees inside out with similar colours. Mild detergent preserves the finish applied for uv degradation. Keep AATCC 183 UPF and ISO 105-B02 light fastness named in the tech pack so every lot is measured the same way.
Drying and storage
dry in shade. Where swimwear is worn for pool training and beach use, set tolerances around that range of movement.
Expected service life
With correct care the target of UPF above 50 after 40 hours exposure remains approachable for 40-50 home washes, after which routine replacement is reasonable. Any change to nylon and polyester knits at 190-230 GSM with high elastane requires re-testing against UPF above 50 after 40 hours exposure before bulk is released.
Supporting the customer
Print clear care wording and mention AATCC 183 UPF and ISO 105-B02 light fastness validation on the product page so claims can be supported if questioned. Past reports from AATCC 183 UPF and ISO 105-B02 light fastness help the mill reproduce the same recipe on the next order.
