Skin aging is a complex, multifactorial process shaped by internal factors like genetics and hormonal decline, and external stressors such as UV radiation and pollution. These trigger changes ranging from fine lines and dryness to reduced elasticity and pigmentation. Today’s consumers seek greener solutions, prompting the cosmetics industry to adopt natural, biodegradable ingredients. Natural mineral waters (NMWs) and botanical extracts—rich in antioxidants, minerals, and bioactives—are emerging as multifunctional ingredients. Their ability to hydrate, calm inflammation, support the microbiome, and protect against oxidative stress makes them ideal for holistic anti-aging formulations. This study focused on formulating and evaluating natural anti-aging products combining NMWs and plant extracts.
Methods
Researchers began with a market survey in Portugal to identify trends and gaps in anti-aging products containing natural ingredients. Six prototypes (two serums, two day creams, two night creams) were formulated using combinations of Portuguese thermal waters and plant extracts: Thymus × citriodorus hydrolat and Vaccinium myrtillus aqueous extract. Each product was adjusted to pH 5 and evaluated for stability (centrifugation, temperature cycling at 4°C/40°C for up to 6 months), viscosity, rheological behavior, and in vitro irritation potential using reconstructed human epidermis models.
Key Findings
- Only 4% of market products combined mineral water and natural extracts, with most brands being French.
- The prototypes contained 91.3–97.5% natural ingredients and remained stable for 6 months.
- Thymus hydrolat showed anti-inflammatory, antioxidant, and antimicrobial benefits.
- Blueberry extract from agro-waste exhibited strong antioxidant and skin-brightening effects.
- Thermal waters improved skin barrier function and reduced IL-6 inflammation markers.
- The serums and creams showed ideal viscosity, spreadability, and non-irritating properties.
- Products were cost-effective, significantly undercutting the price of market competitors.
This study demonstrates the successful development of stable, effective, and safe anti-aging cosmetics using natural mineral waters and bioactive plant extracts. The formulations offer antioxidant, anti-inflammatory, and hydrating properties, targeting skin aging holistically while addressing a clear market gap. Their high natural content and affordability position them as strong contenders in the sustainable skincare segment. Going forward, in vivo efficacy studies and oxidative stress testing are needed to validate the benefits in real-world use. Expanding upcycled ingredients and involving consumer insights in packaging and sensorial design can further enhance market readiness and environmental impact.
Link to the study: https://www.mdpi.com/2079-9284/12/4/150
