Author

Callum Hartmann Page 7

Callum Hartmann is a senior writer at Biology Insights specializing in dermatological health. Living in Tacoma, Washington, he applies scientific training to explain surface symptoms affecting the skin, nails, and lips. Hartmann worked on a fashion magazine copy desk and studied science journalism, having received a bachelor’s degree in communications.

How to Remove a Cold Sore Scar on Your Lip
Why Is There a White Spot on My Toenail?
What Causes Peeling Skin Around Nails?
Why Do Your Lips Turn Black? Causes and Concerns
Why Are My Cuticles Itchy? Causes and What to Do
What Causes Two-Toned Lips and Should You Be Concerned?
What Is a Venous Lake on the Lip? Causes & Treatments
Why Do I Have a Ring Around My Lips? A Scientific Look
What Are Arsenic Nails and What Do They Indicate?
How to Get Rid of Bumps on Lips: Causes & Treatment
Why Are My Cuticles Yellow? Causes and Treatments
Why Are My Eyelids Brown? Common and Medical Causes
Why Does My Skin Have a Green Tint? Here Are the Reasons
Mucocutaneous Ulceration: Symptoms, Causes, and Treatments
Nail Bed Epithelium: Function in Nail Adhesion and Health