Tips & Advice

From Dr. Liz Herself

April 4, 2022
Take Care of Your Largest Organ
Healthy midlife woman

I love April. The days are getting longer, the weather is warming up, and also… it’s my birthday month!

This makes me realize two things: First, as I get out more in the sun, I need to take care of my skin. Second, as I have more birthdays, I see more changes in my skin when I look in that magnifying mirror I now need!

Did you know that your SKIN is your largest organ?

One square inch of your skin contains about 19 million skin cells plus another 60,000 melanocytes (melanin is the skin pigment), 1000 nerve endings, and at least 20 blood vessels.

The epidermis, the outermost layer of skin, provides a waterproof barrier, holds infectious organisms at bay, and creates our skin tone. This layer sheds and replaces 40,000 cells every single day. This means you have a whole new layer of skin every 30 days!

The middle layer is the dermis, which makes up 90% of thickness of your skin. This layer  contains tough connective tissue, hair follicles, sweat glands, and more nerve endings. Blood, sweat, and oils flow mainly from this skin layer.

The deepest layer of the skin is the subcutaneous tissue – hypodermis – and it is made of fat and connective tissue. This deeper layer provides a cushion for your bones and muscles, contains larger nerves and blood vessels, and plays a big role in maintaining a stable body temperature.

Most (70%) of the dermis (middle layer) is made of collagen (plus some elastin), giving strength and flexibility to your skin. As we celebrate more birthdays (yes, I mean as we get older!), the skin gets less efficient at making collagen and new skin cells.

So what can you do about it?

There is a lot you can do to help your skin stay healthy and looking good. While you may choose to have cosmetic treatments such as Botox® and fillers, you still need to use a good skin care regimen with quality products. (More about skin tricks, techniques and treatments in other articles.)

For today, let me leave you with some important do’s and don’ts for taking care of your largest organ:


  • Don’t smoke!
  • Don’t tan on purpose (like in a tanning bed or not using sunscreen)


  • Use sunscreen
  • Use gentle products for skin care maintenance
  • Minimize toxins entering your body by using “clean beauty” products
  • Manage stress as best you can
  • Get regular skin checks with your primary doctor or a dermatologist

Spring has sprung – enjoy the sun and take care of your largest organ!

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