Hawaiian Tropic has expanded its line-up with sun lotions that moisturise for 12 hours.

The Silk Hydration range, rolling out now, is a waterproof sun lotion infused with natural silk proteins and glycerine to hydrate and moisturise skin.

It is available in SPF 15, 30 and 50 in 180ml transparent bottles (£14.99). The combination of properties would set Silk Hydration apart from other sun care products, said marketing manager Emma Davies.

Hawaiian Tropic sales were up 21.6% to £4m last year [Symphony IRI 52 w/e 28 January 2012].

The range was likely to appeal to the brand’s core beauty audience, said Lou Ellerton, consultant at The Value Engineers.