Rosemary Oil

The Basics On Rosemary Oil

What is Rosemary Oil?

Fragrant plant oil derived from rosemary and primarily used as a fragrance in cosmetics…

What are other names for Rosemary Oil?

ROSEMARY OIL EXTRACT, ROSMARINUS OFFICINALIS (ROSEMARY) OIL EXTRACT, and ROSMARINUS OFFICINALIS OIL EXTRACT

What is Rosemary Oil used for?

Rosemary Oil will provide your skin with iron, calcium and several essential vitamins. Rosemary Oil is an antioxidant, which gives it anti-aging properties. Additionally, it will help prevent damage to your skin from environmental agents. Rosemary Oil has a stimulating effect on skin.

How Rosemary Oil is classified

Antioxidants, Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts

Recommendations for using Rosemary Oil during pregnancy and breastfeeding

Avoid

 

Rosemary Oil During Pregnancy

What we know about using Rosemary Oil while pregnant or breastfeeding

Limited information available.

Non-HumanRosmarinus Officinalis (Rosemary) Leaf ExtractOral administration of high doses of rosmarinus officinalis (rosemary) leaf extract adversely affected fertility in male rats.46Groups of 10 male Sprague Dawley rats were fed a diet with 0, 250 or 500 mg/kg bw/day of an ethanol extract of Rosmarinus officinalis (rosemary) leaves in distilled water. After 53 days of dosing, each male rat was mated with two untreated female rats for 10 days; the female rats had been given a subcutaneous (s.c.) dose of 5.0 mg estradiol benzoate 54 h and 0.5 mg progesterone at 54 and 6 h, respectively, prior to being placed with the males. The males were dosed during, and killed after, the 10-day mating period, and the reproductive organs were examined. The females were killed 1 wk after the mating period, and the reproductive tract of each female was examined to determine pregnancy and the number of implantation sites, viable fetuses, and fetal resorptions. Body weights of the male rats of the test groups were similar to those of the control group. However, the high dose group exhibited statistically-significantly reduced absolute weights and organ-to-body weight ratios of testes and male accessory sex organs, diameters of seminiferous tubules and Leydig cell nuclei, height of epithelia of the epididymes and seminal vesicles, germinal and interstitial cell counts, levels of sex hormones, and sperm density and motility when compared to the controls. The numbers of interstitial degenerating cells were statistically-significantly increased in the high-dose group.Exposure of the males to the high dose resulted in a reduced number of pregnant females, implantations and viable fetuses, and an increased the number of resorptions. Results from the low-dose groups suggested dose-response trends in these parameters, although statistically-significant differences were observed only with the high-dose group.Rosmarinus Officinalis (Rosemary) Flower/Leaf/Stem Extract A group of 12 gravid female Wistar rats was dosed by gavage with 26 mg/day of a 30% aq. extract of rosmarinus officinalis (rosemary) flower/leaf/stem extract (13 mg/ml solids) on days 1-6 of gestation (preimplantation), and a group of 14 gravid rats was dosed with the extract on days 6-15 of gestation (organogenesis).47 Negative control groups of 12 or 11 gravid rats were given saline by gavage on days 1-6 or 6-15 of gestation, respectively. All dams were killed on day 21 of gestation. No signs of maternal toxicity were observed, and maternal weight gains were similar for treated and control groups.In the rats dosed on days 1-6 of gestation, a non-statistically significant increase in preimplantation loss was observed. No changes in post-implantation loss were seen as compared to controls, and no other reproductive parameters were affected. In the group treated on days 6-15 of gestation, a non-statistically significant increase in post-implantation loss rate (2.54%) was reported; analysis of the resorptions found that they occurred during the early post-implantation period. No other changes in reproductive parameters were observed when compared to the negative control group. Developmental effects were not ob-served in either group.HumanAccording to the PDR for Herbal Medicines, rosemary preparations should not be used as a drug during pregnancy; very large quantities of the leaves reportedly can be misused as an abortifacient.5 According to Herbal Drugs and Phytopharma-ceuticals, toxic side effects may occur with components of the essential oil.48 (Details were not provided.)Effects on Estrogenic ActivityNon-HumanRosmarinus Officinalis (Rosemary) Leaf ExtractGroups of seven or eight 6-wk old ovariectomized CD-1 mice were fed either a diet containing 2% of a methanol extract of Rosmarinus officinalis (rosemary) leaves or the basal diet.49 After 3 wks, the animals were given an i.p. injection of 0, 45, or 100 ng/mouse estradiol or estrone in 50 μl corn oil, once daily for 3 days. Eighteen hours after the last injection, the animals were killed and the uterus was removed. In the mice fed the basal diet, estradiol and estrone increased the uterine wet weight in a dose-dependent manner. Rosemary inhibited 35-50% of the uterine response; this was statistically significant.HumanRosmarinus Officinalis (Rosemary) Leaf ExtractIn a study investigating the effects of a botanical supplement on sex steroid hormones and metabolic markers in premeno-pausal women, a few changes were found, however, the changes were not very remarkable.50 A group of 15 premenopausal women were asked to take a supplement containing 100 mg Rosmarinus officinalis (rosemary) leaf 5:1 extract; 100 mg Cur-curma longa (turmeric) root extract standardized to 95% curcumin; 100 mg Cyanara scolymus (artichoke) leaf 6:1 extract;100 mg Silybum marinum (milk thistle) seed extracted; 100 mg Taraxacum officinalis (dandelion) root 4:1 extract; and 50 mg Schidandra chinensis (berry) 20:1 extract. Four capsules were to be taken twice a day with meals. Rice powder placebo capsules were given to a group of 15 premenopausal women using the same dosing regimen. Blood and urine samples were collected during the early-follicular and mid-luteal phases of study menstrual cycles 1 and 5.On average, test subjects took 6.3 capsules/day, and controls took 7.1 capsules/day. Compared to the placebo group, the fol-lowing changes from Cycle 1 to Cycle 5 in early-follicular phase serum hormone concentrations were statistically significant or borderline significant: decreases in serum dehydroepiandrosterone (-13.2%, p= 0.02); dehydroepiandrosterone sulfate (-14.6%, p=0.07); androstenedione (-8.6%, p=0.05); and estrone sulfate (-12.0%, p=0.08). No other statistically significant changes or trends were observed for other serum sex steroid hormones, serum metabolic markers, or urinary estrogen metab-olites at either phase.

General safety info about Rosemary Oil from CIR

The Expert Panel assessed the safety of 10 Rosmarinus officinalis (rosemary)-derived ingredients and concluded these ingredients are safe as used in cosmetics when formulated to be non-sensitizing. The Rosmarinus officinalis-derived ingredients are most frequently reported to function in cosmetics as skin conditioning agents or as fragrance ingredients. The Panel reviewed the available animal and clinical data to determine the safety of these ingredients. Because final product formulations may contain multiple botanicals, each containing similar constituents of concern, formulators are advised to be aware of these constituents and to avoid reaching levels that may be hazardous to consumers. Industry should use good manufacturing practices to limit impurities that could be present in botanical ingredients.

Use this, not that!

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Products where you might find Rosemary Oil

Naturopathica Rosemary Oil-Reducing Moisturizer (1.7 fl. oz.); GROWN ALCHEMIST Body Cream – Mandarin & Rosemary Leaf (4.23 oz.); Dermalogica Precleanse Cleansing Oil; Biossance Squalane + Tea Tree Balancing Oil; Caudalie Vinosource Overnight Recovery Oil