The word ‘natural’ has become a trendy marketing ploy. When it appears on the label of cosmetics, manufacturers often charge a higher price.

“There’s a tendency for people to assume that synthetically derived ingredients are harmful, and that if something is labelled ‘natural’ it must be safer or better for their skin. This is often a misconception,” warns Dr Rosalind Simpson, a consultant dermatologist and associate professor at the University of Nottingham.

First, not everything labelled ‘natural’ is entirely derived from natural sources. “I came across a simple study that looked at 100 skincare products on Amazon that were advertised as natural. Only 42% of them actually were,” Simpson told The Guardian. In fact, most ‘natural’ products contained at least two synthetic ingredients.

Just because an ingredient is plant-based doesn’t mean it’s gentle on all skin types. Plant-based fragrances and essential oils like cinnamon, tea tree, peppermint, and linalool can cause irritation in some people. Lanolin—a moisturizer derived from sheep’s wool—is also a common allergen. Some synthetic fragrances and dyes can be just as irritating, but that’s not always the case—there are also lab-developed synthetic ingredients designed to be gentler on skin and less likely to cause reactions.

Simpson’s takeaway? Not all natural products are “good,” and not all synthetic ones are “bad.” The key is to find what works for your skin and fits your budget. For sensitive skin, she recommends products with a minimal number of ingredients. And if you suspect a product is causing you a reaction—even months after you’ve started using it—it’s wise to temporarily stop using it to see if it’s the culprit. | BGNES