Two studies have found that krill oil can work to improve the condition of a healthy adult's skin.
The results, which were published in the Journal of Cosmetic Dermatology, found that the omega-3-rich nutraceutical could enhance the functionality of the skin barrier, while also promoting skin hydration and elasticity.
The observed effect was seen at a dosage level of 1 to 2g daily.
Researchers at the University of Sunderland also found that supplementation with krill oil improved the omega-3 index in the red blood cells of participants.
Krill oil to decrease TEWL
The randomised, placebo-controlled pilot studies were carried out in healthy adults who had normal to dry skin at baseline.
The protocol was carried out for 12 weeks, with an outcome assessment at the beginning, middle and end of the study period.
Researchers found that krill oil could reduce the levels of transepidermal water loss (TEWL), which equates to the improved functionality of the skin barrier.
They also determined that this effect was underpinned by the omega-3 index of the red blood cells, as those with higher levels of omega-3 exhibited better skin elasticity, hydration and health.
“For years we have looked at how krill oil, with its phospholipids and long-chain omega-3 fatty acids, can positively impact skin health,” said Katina Handeland, PhD, Director R&D, Human Nutrition.
“The skin is the body’s largest organ, and its health and hydration rely on lipid and ceramide levels, which are influenced by nutrition. Omega-3 EPA and DHA modulate the lipid composition of skin cell membranes and their associated lipid mediators, thereby supporting skin barrier function."
"Both dietary essential fatty acids and phospholipids have shown to give a positive impact on skin ceramide levels, which are known to decline with age. The positive results in these two trials help validate evidence from previous research by showing the positive impact krill oil has in improving skin barrier function and moisture retention.”