F Cos Eyeceutical. Serum biotechnology for swelling and bags under the eyes. Eyeceutical serum bags under the eyes contains a tetrapeptide that helps to tighten the bags under his eyes, with this action the appearance of bags containing water, is reduced noticeably. In independent testing has verified that the tetrapeptide has a relaxing effect on the skin, eliminating swelling and there was also the ability of wetting and increased elasticity. The major advantage is that this effect may be a non-invasive way, without an operation. The effectiveness of the active substances of the preparation was confirmed by the results from the laboratory, in vitro, and volunteers. 95 percent of volunteers achieved a visible reduction of eye bags after 60 days of the use of serum twice daily. The first small improvements can be observed after 15 days. The product is effective for women than for men.