While studying for my skin science lectures today at UCD, I thought it would be a good idea to write a post on vitamin D. We covered vitamin D production in the skin, and it was one of the most interesting topics so far, because it sits at the intersection of dermatology, nutrition, and overall health.…

Atopic eczema (atopic dermatitis) is a chronic, intensely itchy inflammatory skin condition. Although it often appears as dry, irritated skin, it is not just a problem of dryness. Instead, eczema reflects a complex interaction between a weakened skin barrier, an overactive immune system within the skin, genetic susceptibility, microbes, and environmental triggers. Together, these factors…

Nodules and granulomas are one of the most common concerns after aesthetic injections, especially dermal fillers. While they can be worrying, they are usually manageable when identified early and treated correctly. Understanding what they are, when they appear, and how to manage them is essential for anyone considering filler treatments. What Are Nodules and Granulomas? A nodule…

A healthy pregnancy is shaped by simple, consistent daily habits. Research shows that balanced nutrition, safe levels of physical activity and regular relaxation techniques can significantly lower the risk of complications such as gestational diabetes, pre-eclampsia, excessive weight gain and preterm birth. These habits also support mood, energy levels and overall wellbeing throughout pregnancy. The…

Shift work is integral to healthcare, emergency services, manufacturing, transport, and public safety. Despite its necessity, working outside conventional daylight hours places sustained strain on human physiology. Extensive research demonstrates that long-term exposure to night and rotating shifts is associated with elevated risks of cardiometabolic disease, mood disorders, cerebrovascular events, and certain malignancies. These risks…

Melasma is one of the most common skin concerns I am asked about. It is a chronic, relapsing form of facial hyperpigmentation that disproportionately affects women and significantly impacts quality of life. Although often referred to as a cosmetic condition, research clearly shows that melasma is a complex, biologically active disorder involving genetics, hormones, light…

Chemical peels remain one of the most reliable, evidence supported skin treatments for improving visible signs of aging. Research consistently highlights that peels containing trichloroacetic acid (TCA), glycolic acid, lactic acid, and retinol deliver meaningful improvements in wrinkles, pigmentation, and skin texture. When paired with proper aftercare, they can safely rejuvenate the skin and enhance…

Fluence, defined as the energy delivered per unit area (J/cm²), is one of the most critical parameters in laser hair removal. The correct fluence setting directly influences treatment efficacy, patient comfort, and the risk of side effects. Selecting appropriate fluence requires careful consideration of several factors, including skin phototype, hair colour and thickness, and the…