Flower Extracts as Multifunctional Dyes in the Cosmetics Industry

Area of Science:

• Natural Products Chemistry
• Cosmetic Science
• Pharmacognosy

Background:

• Flowers are rich sources of bioactive compounds with antioxidant, anti-inflammatory, and anti-aging properties.
• These natural compounds are increasingly utilized in the cosmetic and food industries for their beneficial effects and potential as natural dyes.
• Investigating specific flower extracts can reveal novel applications in skincare and product coloration.

Purpose of the Study:

• To evaluate the bioactive properties of water extracts from five plant species: Papaver rhoeas L., Punica granatum L., Clitoria ternatea L., Carthamus tinctorius L., and Gomphrena globosa L.
• To assess their potential as natural dyes and their antioxidant, anti-inflammatory, and anti-aging effects.
• To determine their safety for use on skin cells.

Main Methods:

• Water extracts of selected flowers were prepared.
• Antioxidant activity was measured using ABTS and DPPH radical assays.
• Anti-inflammatory effects were assessed by inhibiting lipoxygenase and proteinase activity.
• Cytotoxicity on skin cells was evaluated using Alamar Blue and Neutral Red tests.
• Inhibition of elastase and collagenase enzymes was studied.

Main Results:

• All tested flower extracts demonstrated no cytotoxic effects on skin cells.
• The extracts are rich in antioxidants, with Papaver rhoeas exhibiting the strongest activity (IC50: 24.8 µg/mL for ABTS, 47.5 µg/mL for DPPH).
• Significant anti-inflammatory properties were observed, including >80% inhibition of lipoxygenase and ~55% inhibition of proteinase.
• Extracts from P. rhoeas, C. ternatea, and C. tinctorius showed strong and stable coloring abilities suitable for cosmetic products.

Conclusions:

• The investigated flower extracts possess valuable bioactive properties, including antioxidant and anti-inflammatory effects, and are safe for cosmetic applications.
• Papaver rhoeas, Clitoria ternatea, and Carthamus tinctorius extracts are effective natural dyes with good stability for cosmetic formulations.
• These findings highlight the potential of these floral resources for developing natural and functional cosmetic products.