Clinical Studies & Scientific References

Peer-reviewed research supporting the dermatological principles referenced across Olavita's editorial content.

About this page. The scientific principles discussed in our articles — including facial muscle contraction's role in wrinkle formation, topical peptide efficacy, skin penetration science, and ceramide-based barrier function — are supported by peer-reviewed research from established journals in dermatology, cosmetic science, and aesthetic medicine.

The references below examine the core mechanisms and ingredient classes that inform Olavita Liquid Solution's formulation. Individual studies are organized by topic. Each entry links directly to the original publication on PubMed, Wiley, Springer, or the relevant regulatory authority.

For questions regarding specific studies or our scientific substantiation, contact us

On facial muscle contraction as a primary cause of expression wrinkles

Le Louarn, C., Buthiau, D., & Buis, J. (2007). Structural aging: the facial recurve concept. Aesthetic Plastic Surgery, 31(3), 213–218. PubMed↗

Le Louarn, C., Buthiau, D., & Buis, J. (2007). The Face Recurve concept: medical and surgical applications. Aesthetic Plastic Surgery, 31(3), 219–231. PubMed↗

Hillebrand, G. G., Liang, Z., Yan, X., & Yoshii, T. (2010). New wrinkles on wrinkling: an 8-year longitudinal study on the progression of expression lines into persistent wrinkles. British Journal of Dermatology, 162(6), 1233–1241. PubMed↗

Kashiwagi, S., Hosoda, Y., Ogura, N., & Sugimoto, M. (2012). The preliminary study of the relationship between facial movements and wrinkle formation. PubMed↗

Xiong, Y., et al. (2025). Study on the Wrinkling Mechanisms of Human Skin Based on Digital Image Correlation and Facial Action Coding System. Applied Sciences, 15(12), 6803. MDPI↗

Limbert, G., et al. (2023). Reduction of wrinkles: From a computational hypothesis to a clinical, instrumental, and biological proof. PMC↗

Schürch, C., et al. (2020). Facial Expression Wrinkles and Their Relaxation by a Synthetic Peptide. International Journal of Peptide Research and Therapeutics. Springer↗

On topical ingredient penetration

Bos, J. D., & Meinardi, M. M. H. M. (2000). The 500 Dalton rule for the skin penetration of chemical compounds and drugs. Experimental Dermatology, 9(3), 165–169. PubMed↗

On Acetyl Hexapeptide-8 (Argireline) clinical efficacy

Blanes-Mira, C., et al. (2002). A synthetic hexapeptide (Argireline) with antiwrinkle activity. International Journal of Cosmetic Science, 24(5), 303–310. Wiley↗

Wang, Y., et al. (2013). The anti-wrinkle efficacy of argireline, a synthetic hexapeptide, in Chinese subjects: a randomized, placebo-controlled study. American Journal of Clinical Dermatology, 14(2), 147–153. PubMed↗

Raikou, V., et al. (2023). Investigating the effects of Argireline in a skin serum containing hyaluronic acids on skin surface wrinkles. PMC↗

Cosmetic Ingredient Review Expert Panel. (2020). Safety Assessment of Acetyl Hexapeptide-8 Amide as Used in Cosmetics. CIR Report (PDF)↗

Sideri, K., et al. (2025). Acetyl Hexapeptide-8 in Cosmeceuticals — A Review of Skin Permeability and Efficacy. International Journal of Molecular Sciences, 26(12), 5722. MDPI↗

Matthews, A., & Nazer, A. (2024). Public Interest in Acetyl Hexapeptide-8: Longitudinal Analysis. JMIR Dermatology, 7, e54217. JMIR↗

On Matrixyl 3000 (Palmitoyl Tripeptide-1 & Palmitoyl Tetrapeptide-7)

Li, X., et al. (2023). Clinical evidence of the efficacy and safety of a new multi-peptide anti-aging topical eye serum. Journal of Cosmetic Dermatology. Wiley↗

Tajbakhsh, S., et al. (2022). Matrixyl Patch vs Matrixyl Cream: A Comparative In Vivo Investigation of Matrixyl (MTI) Effect on Wound Healing. PMC↗

On ceramides and skin barrier function

Leo, T. K., Tan, E. S. S., Amini, F., Rehman, N., Ng, E. S. C., & Tan, C. K. (2022). Effect of Rice Ceramides Supplementation on Improving Skin Barrier Functions and Depigmentation. Nutrients, 14(13), 2737. PMC↗

Kono, T. (2021). Clinical significance of the water retention and barrier function-improving capabilities of ceramide-containing formulations: A qualitative review. The Journal of Dermatology. Wiley↗

Kikuchi, K., et al. (2024). Efficacy and Safety of Oral Administration of Wine Lees Extract-Derived Ceramides and Glucosylceramides in Enhancing Skin Barrier Function: A Randomized, Double-Blind, Placebo-Controlled Study. PMC↗

On Botulinum Toxin Type A (mechanism of action comparison)

Carruthers, A., Bruce, S., Cox, S. E., Kane, M. A., Lee, E., & Gallagher, C. J. (2014). OnabotulinumtoxinA for treatment of moderate to severe crow's feet lines: A review. Aesthetic Surgery Journal. PubMed↗

Camargo, C. P., et al. (2021). Botulinum toxin type A for facial wrinkles. Cochrane Database of Systematic Reviews, 7. Cochrane↗

Industry data

American Society of Plastic Surgeons. (2024). Plastic Surgery Statistics Report. Full Report (PDF)↗ ASPS Page↗

Note on cited statistics. Specific percentages and outcomes referenced in our editorial content are illustrative of typical clinical results from research on the ingredient classes above, not from clinical trials conducted on Olavita Liquid Solution specifically. Individual results may vary.

Statements on this site have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare provider before beginning any new skincare regimen.

Page last reviewed: April 2026