Wildflower honey: a promising approach to slowing skin aging caused by UV rays

Honey: A Natural Shield Against the Effects of the Sun

In the face of external aggressors—particularly ultraviolet rays—science is constantly seeking new natural allies to preserve the integrity of our skin. According to a study published in the scientific journal Antioxidants, wildflower honey may play a key role in protecting human skin cells from damage caused by ultraviolet light, which is responsible for premature skin aging.

Researchers discovered that skin cells immersed in a diluted honey solution before being exposed to UV radiation retained their youthful characteristics and ability to regenerate much better than untreated cells. This finding reinforces the idea that honey could, in the future, be incorporated into cream formulations or clinical treatments designed to slow skin aging.

This scientific breakthrough also makes it possible to analyze, gene by gene, the precise mechanism by which honey alleviates the cellular stress triggered by ultraviolet radiation. The study, reported by the science news website Earth.com, was conducted by a research team at the University of Sassari (UNISS), led by Professor Margherita Maioli and Dr. Fikriye Fulya Kavak.

An innovative scientific approach that mimics living skin

The use of honey in medicine is nothing new. Honey-based dressings and gels are already on the market to treat burns and stubborn wounds, thanks to their antimicrobial and anti-inflammatory properties. Intrigued by the use of Manuka honey in medical devices, Dr. Kavak wanted to investigate whether high-quality multifloral honey could go a step further by directly protecting living skin cells.

“I see this as a promising direction, particularly for skincare and dermocosmetic applications,” Dr. Kavak said in an interview with Earth.com. To test this hypothesis, the research team chose to work directly with live cell cultures rather than with a finished cosmetic product.

To replicate the behavior of human skin, the scientists simultaneously cultured three types of skin cells: stem cells derived from biopsies, fibroblasts (which form the skin’s supportive structure), and keratinocytes (representing the outer layer). These cells were placed in a dynamic bioreactor where the culture medium circulated continuously, thereby mimicking the natural environment of our skin.

The Genetic Effects of Honey on Cellular Stress

The impact of UV rays goes beyond a simple sunburn. This radiation breaks down DNA, saturates cells with reactive oxygen species, and drives them toward senescence—a state of biological retirement in which they cease to divide and renew themselves. In stem cells previously treated with a 1% honey solution, the opposite reaction was observed.

The genes responsible for the youthfulness and self-renewal of stem cells were found to be more active, while genes linked to aging and cell senescence remained dormant. The researchers closely monitored more than 20 genes involved in skin regeneration and repair, noting that honey’s effect was broadly distributed across all of these genetic switches.

“This supports the idea that multifloral honey can act as a multifactorial biological modulator rather than affecting a single target,” Dr. Kavak explained to Earth.com. The treated cells also released less nitric oxide—a marker of chemical damage—while strengthening their antioxidant defenses. This ability to neutralize oxidative damage echoes another study conducted on rats, in which prolonged honey consumption reduced DNA breaks and increased the activity of antioxidant enzymes.

Saving Fibroblasts and Restoring Cellular Balance

The firmness and suppleness of our skin depend largely on fibroblasts, which produce collagen and hyaluronic acid. When exposed to UV rays, untreated cell cultures showed major signs of depletion: the gene responsible for hyaluronan synthesis was silenced, as was the gene for a protective heat shock protein, while a gene promoting cellular self-destruction was activated.

Pre-treatment with honey reversed this trend. As a result, the hyaluronan gene resumed activity, the protective gene was reactivated, and the self-destruction signal diminished, allowing the fibroblasts to return to a near-normal state. Similar observations have been made by other laboratories, showing that Greek honey extracts also protect skin cells against UVB radiation by reducing DNA breaks and protein alterations.

The major surprise of this study lies in the moderation of the cellular response. While damaged cells tend to massively activate the Wnt signaling pathway (a rapid growth mechanism), honey kept this pathway suppressed. Instead, it guided the system toward a stable equilibrium, protecting the cells without causing uncontrolled overactivity.

Prospects, Limitations, and the Future of Dermocosmetics

It should be noted, however, that not all honeys perform equally well. Another scientific publication examined the effects of a commercial Manuka honey on fibroblasts exposed to UV radiation: the honey disrupted cellular metabolism and mitigated the damage only to a very limited extent. Efficacy therefore depends heavily on the variety of honey and the nature of the targeted cells.

The honey used in the University of Sassari study came from beekeepers in eastern Turkey, a region rich in active plant compounds, notably acacetin (a flavonoid) and several antioxidant acids. This product also contained a proline concentration five times higher than the minimum threshold required by European standards, thus guaranteeing its exceptional purity.

The scientific team is now working to verify whether these changes observed at the genetic level are confirmed at the level of functional proteins. They are also studying the creation of honey-loaded microfibers to deliver controlled doses of active ingredients directly to the epidermis. Although promising, this research must still be validated on living skin before it can be commercialized.

For any medical questions, consult a qualified healthcare professional.

Source: earth.com

Wildflower honey: a promising approach to slowing skin aging caused by UV rays