The skin is the largest organ of the body.
It keeps our insides in and the outside out, helping to protect us from damage from radiation, infection and pollution.
Skin keeps us insulated and warm in the winter months and cools us down in the summer, managing to be absorbent as well.
The skin isn’t just what you can see on the outside. The innermost layer – the dermis – consists of blood vessels, nerve tissue, sweat glands and collagen, which gives skin its elasticity and strength. The outer layer – the epidermis – is supplied with nutrients and oxygen by the dermis; it contains no blood vessels and allows light to pass through. It’s made up of dermal cells that lose their moisture as they move nearer to the surface. This causes the cells to become flatter, harder and more concentrated in a protein called keratin. The surface of the skin is comprised of these dead epidermal cells that flake off and are replaced.
The health of both layers of skin is reliant on the nutrients that it receives from the blood vessels in the dermis. What you eat today is what you wear tomorrow!
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US Custom changes Aug 29 2025
Every US shipment, regardless of value or content, must now undergo full entry with U.S. Customs and Border Protection (CBP).
Our lab partners are working hard to reduce the impact of these new customs procedures on returning US bound test samples.
Unfortunately this change may impact your test results turnaround time
Transit times may be longer due to increased customs processing.
Samples may be delayed or held while clearance is completed.
If you have already sent back your sample and it is directly affected by these customs delays, our team will contact you individually to advise on the next steps.
We know how vital timely testing is for you and we greatly value your understanding while these changes take effect.
We expect the situation to improve as customs processes adjust, and we will provide updates as this develops.
Please do not return samples to the laboratories that may arrive after Wednesday 27th March and up to and including Monday 2nd April.
The laboratories are closed from the 28th March – 2nd April for the Easter Holiday.
