Californian skincare company Skin Authority has unveiled its Wrinkle Reversing Serum, designed to reduce fine lines and firm the skin.

The serum is the first of the company's products to include its exclusive SGF-4 Technology™, which consists of four natural nourishing proteins and skin growth factors.

Suitable for use either alone or as part of an existing skincare routine, a single pump of the 16ml product per day is said to be sufficient in order to see results.

The serum is also appropriate for use by those with photo damaged skin or hyperpigmentation.