Development and Efficacy Tests of Cannabinoid, Prebiotic, and Postbiotic-based Face Serum and Cream

Study of the Effectiveness of Moisturizing/Anti-aging Cosmetic Products for External Application in Healthy Volunteers

The study includes the evaluation of efficacy of face serum/cream in healthy volunteers aged 25-60 years with the following methods: a) self-assessment questionnaire b) biophysical organological measurements of skin elasticity, skin microtopography, transepidermal water loss and stratum corneum hydration.

This study aimed to develop and evaluate a face serum and a face cream incorporating Cannabis extract, a prebiotic mixture containing Glycerin, Lactitol, Xylitol, and heat-treated Lactobacillus plantarum HEAL19, a non-viable probiotic (post-biotic) that retains structural components and functional benefits. Efficacy was evaluated through a randomized, placebo-controlled study involving sixteen healthy female volunteers aged 24-53. Each participant applied the active serum to one half of the face and a placebo one to the other, twice daily for 4 weeks (phase 1). This was followed by a 4-week period during which a placebo cream was used by all volunteers. Subsequently, each volunteer applied the active cream to one half of the face and a placebo one to the other, twice daily for 4 weeks (phase 2). Assessments included transepidermal water loss, skin microtopography, elasticity, and hydration, alongside self-assessment questionnaire.

Inclusion Criteria:

1. Healthy volunteers over 18 years old

Exclusion Criteria:

1. Pregnant women
2. Individuals who were currently taking hormonal therapy
3. Individuals who were currently taking medications that cause photosensitivity
4. Individuals with active lesions of any dermatological condition