Lanoline is the natural "grease" or "wax" that originates from the natural secretion of the sebaceous glands of sheep. Lanolin's waterproofing property aids sheep in shedding water from their coats. Lanolin forms a breathable and protective film on the skin , and has been known since ancient times for its skin treating- and smoothing properties, which lasts for many hours. It is actually quite similar in nature to the oils produced by human skin, and is used extensively in moisturizers and other skin-care products. / Lanoline helps to keep interlock’s unique moisture handling capabilities intact, will help ensure that any lingering moisture will not lead to microbe and fungal growth, and will protect the fiber from degradation over time and repeated use. Interlock’s inner layers attract water, while its outer layers repel it, meaning interlock can get wet and still keep you insulated and feeling dry. / Our Lanoline Interlock fabric is Oeko Tex 100 labelled, this knit fabric is extra soft against the skin. Perfect to sew baby garments, tops, active wear, loungewear and more. / Taking care of your lanoline interlock creation:

As it is a natural, self-regulating fibre, interlock does not actually need to be cleaned as frequently as other clothes. The best approach is to spot-clean stains wherever possible – gently blotting instead of rubbing. You can also air garments after wearing them: the lanolin goes to work removing bacteria & odours, as the moisture evaporates away.

Interlock is best washed by hand, in lukewarm water, with a lanolin-replenishing soap.

You can also wash interlock in the washing machine on hand wash cycle 30 degree. Make sure that the machine also rinses in 30 degree.
If the machine rinses in cold water, cotton interlock will shrink. You can centrifuge the fabric and after taking it out of the machine, shake it and put it to dry on a mild heat source. Use lanolin soap as it replenishes your interlock product with the natural lanolin.