As the understanding of the skin’s biological ecosystem evolves, the industry is shifting away from “anti-aging” toward “well-aging”—a philosophy that prioritizes skin health through a dual-action approach.
A recent clinical-instrumental study by Complife provides compelling evidence that this integrated method isn’t just a trend—it’s a scientifically proven necessity for modern skincare.
The Science of the “In&Out” Synergy
Skin aging is a complex process influenced by microbiome balance, environmental stressors, and the integrity of the skin barrier. While topical treatments handle external defense, oral supplements address the internal foundations of cellular health.
The Complife study focused on 96 Caucasian subjects with mild-to-moderate facial aging. Researchers tested a specific combination of high-performance ingredients:
– “In” (Oral): A potent probiotic blend consisting of Lactobacillus plantarum PBS067, Lactobacillus reuteri PBS072, and Lactobacillus rhamnosus LRH020.
– “Out” (Topical): A formulation featuring ectoin—a powerful natural stress-protection molecule—and Sodium Hyaluronate for deep hydration.
Immediate Results and Long-Term Transformation
The study demonstrated that the benefits of this combined protocol begin almost instantly and continue to build over time.
Instant Gratification (1 Hour after application): Wrinkle Depth: Reduced by 9.2%; Hydration: Increased by 16.6%, Radiance: Boosted by 19.1%.
Sustainable Improvement (4 to 8 weeks):
The true power of the In&Out approach became evident over the two-month period. By integrating oral probiotics with topical care, the subjects experienced significant improvements across all key skin markers:
1. Barrier Function & Hydration: The treatments respected and reinforced the skin’s hydrolipid film, leading to a visible reduction in Transepidermal Water Loss (TEWL).
2. Elasticity and Texture: There were measurable improvements in skin smoothness and elasticity, making the skin feel firmer and more resilient.
3. Skin radiance and pores (size and impurities): The skin radiance demonstrated a steady improvement, 5 times higher in the active group.
4. Microbiome Enhancement: Key strength of the study is the integration of the skin microbiome analysis, providing insights into the biological mechanisms underlying the observed clinical effects.
Conclusion: Evidence of scientifically-backed strategy
The Complife study confirms that when we treat the skin as a whole system, the results are both measurable and perceived. Subjects reported a high level of satisfaction, aligning their self-assessment with the clinical data.
By combining the internal support of probiotics with the external protection, it is possible to move beyond superficial fixes. This In&Out study shows a comprehensive, scientifically-backed strategy to approach the signs of aging and achieve lasting results.
With a strong experience in In&Out projects, Complife Group can support its partners with a tailor-made approach, defining the most suitable strategy and designing a personalized protocol for each client’s specific request.
https://www.complifegroup.com/wp-content/uploads/2025/03/cosmetics-12-00072-v2.pdf
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