Juniper Berry is very effective in a number of different areas and here are a couple of research studies highlighting this.

Study 1 

Phytotherapy Research Volume 17, Issue 3, March 2003 Pages 227 – 231
First published:27 March 2003

Antibacterial and antifungal activity of juniper berry oil and its selected components
Natalia Filipowicz, Marcin Kamiński, Julianna Kurlenda, Monika Asztemborska, J. Renata Ochocka

 Juniper berry oil is stated to possess a wide spectrum of pharmacological activities and its monographs are included in some National Pharmacopoeias. The antibacterial and antifungal activity of the oil was reported by some authors. In our study we estimated the antibacterial and antifungal activity of three different juniper berry oils and their main components. All the micro‐organisms used in this experiment were isolated from patients of Regional Hospital of Gdańsk and some of them showed resistance against commonly used antibiotics. Only one of the oils (labelled A) revealed good antimicrobial properties. None of the single oil components was a stronger antibacterial and antifungal inhibitor than the oil A itself. Our data suggest that the antimicrobial activity of juniper oil A is the result of either the specific composition of the oil A (highest concentration of (−)‐α‐pinene, p‐cymene and β‐pinene) or activity of a single non‐identified compound. The presence of an adulterant in the oil was excluded. Copyright © 2003 John Wiley & Sons, Ltd.

Study 2 

Journal of Cosmetic Dermatology
Volume 1, Issue 4, December 2002, Pages 183 – 187
First published:25 November 2003

Inhibition of elastase activity by essential oils in vitro
Masahiro Mori, Norikazu Ikeda, Yoshiko Kato, Miki Minamino, Kazuhito Watabe


Summary Background
Essential oils are widely used, for example in aromatherapy and aroma massage. In aroma massage, essential oil, diluted with vegetable oil, is rubbed onto the skin. Components of essential oil penetrate into the skin and have an influence on the dermis. Elastase is an
enzyme which degenerates dermal elastin. Elastase activity is believed to contribute to cutaneous wrinkling and ageing.

To investigate the inhibitory effect of essential oils on elastase activity.

Inhibition of elastase activity by various essential oils was assessed using two elastase enzymes: porcine pancreatic elastase (PPE) and human neutrophil elastase (HNE).

Elastase activity was inhibited by various essential oils, especially by those oils derived from lemons, juniper and grapefruit. Although the specific inhibitory component was not determined, lemon oil had the greatest inhibitory effect on PPE. Some essential oils also
inhibited HNE.

These studies demonstrate a possible rationale for the use of essential oil massage as a preventive treatment for cutaneous wrinkling and ageing.

You might also enjoy reading the article I have on Wrinkles and Essential oils here: