Rosmarinus Officinalis (Rosemary) Leaf Extract
Rosmarinus Officinalis (Rosemary) Leaf Extract, a standard or concentrated hydroglycerin stock. Standardized for key phenolic actives like rosmarinic acid, carnosic acid, carnosol, and ursolic acid, it offers comprehensive skin and scalp support, distinct from generalized rosemary materials or the botanical synonym Salvia rosmarinus.
The vibrant leaves of Rosmarinus Officinalis.
Botanical Identity: Rosmarinus Officinalis (Rosemary) Leaf Extract, also known by common names such as Rosemary or the botanical synonym Salvia rosmarinus, is a highly valued cosmetic raw material. Important: Formulate Labs supplies ingredients by their INCI names, not by specific supplier SKUs or generic trade names.
Dual mechanism: Rosmarinus Officinalis Leaf Extract delivers cosmetic efficacy through a high concentration of phenolic compounds, including rosmarinic acid, carnosic acid, carnosol, and ursolic acid. These bioactives act as potent antioxidants, neutralizing damaging free radicals and reactive oxygen species (ROS). Furthermore, the extract supports skin’s structural integrity by inhibiting matrix metalloproteinases (MMPs), enzymes that contribute to collagen degradation, and helps soothe skin by suppressing pro-inflammatory pathways.
Use levels: When dosing this Standard or Concentrated hydroglycerin stock, recommended usage ranges from 0.2% to 5.0% in leave-on skincare formulations. For rinse-off products such as cleansers and shampoos, concentrations can be increased up to 10.0% to achieve desired effects.
Market context: Leading industry suppliers position Rosemary Leaf Extract as a high-performance, sustainable antioxidant, often outperforming synthetic alternatives like BHT and BHA. It is also leveraged for eco-friendly and clean-label preservation, enhancing product shelf life and catering specifically to the sensitive skin market. Premium multifunctional active blends often incorporate standardized rosemary extracts to substantiate advanced clinical claims related to anti-inflammation, skin barrier repair, and anti-pollution efficacy.
We ship standard or concentrated extract stock with selectable preservation - ready to meter into finished formulas at the use rates in the formulation guide below.*
Please note: "Rosemary" and "Salvia Rosmarinus" are common trade or botanical names, while Rosmarinus Officinalis (Rosemary) Leaf Extract is the official INCI designation for this material.
Every lot is produced to order in our AI-powered robotic factory. Nothing sits on a warehouse shelf going stale - you get a date-of-manufacture-fresh batch every time.
* Structure/function statements based on published cosmetic in-vitro studies. Not evaluated for, and not intended to, diagnose, treat, cure, or prevent any disease.
Our understanding of Rosmarinus Officinalis (Rosemary) Leaf Extract is informed by rigorous scientific research, validating its versatile applications in modern cosmetic formulations. The following studies highlight key mechanisms of action and substantiated benefits. These are independent, third-party papers we link for formulators evaluating mechanism, tolerability, and published panel data. We did not conduct this research and do not guarantee replication in your finished formula.
Phenolic diterpenes in rosemary extract inhibit MMP-9 and reduce pro-inflammatory cytokines, supporting its use in soothing formulations against environmental stressors.
This research identifies 12-methoxycarnosic acid as an active constituent in rosemary extract that inhibits the 5α-reductase enzyme, supporting a healthy hair growth cycle.
Carnosol and carnosic acid in human cellular models demonstrate potent antioxidant functions by inducing skin's protective phase II detoxification enzymes, protecting against oxidative stress.
These citations are provided for informational and formulation-research purposes only. Study designs, concentrations, vehicle systems, and populations vary and may not match the extract stocks on this page. Published results do not constitute FDA or EU cosmetic claim substantiation for your brand. Always review the primary literature and consult your regulatory counsel before making structure/function statements on finished products.
Bulk composition at the selected Rosmarinus Officinalis (Rosemary) Leaf Extract loading. Base carrier components scale proportionally when preservative is added; extract stays at the selected loading. Updates dynamically when you change base or preservation above. Full CAS disclosure is on the SDS/TDS for the selected variant (FL-RLE-W1-MBS4-5PCT-001).
SDS + TDS are issued per selected recipe. Links swap when you change selections above. A sample COA shows the standard extract QC panel (pH, organoleptic, TAMC/TYMC). Lot-specific COAs ship with every order.
We cook the raw botanical powder into the selected carrier. The botanical carries polar phenolics, flavonoid glycosides, and related extractable fractions. Those markers support antioxidant and skin-conditioning cosmetic stories. This is not a solvent isolate or a standardized marker extract. Lot identity appears on the COA and TDS.
This is a ready-to-use cosmetic extract stock, not a finished consumer product and not a standardized marker isolate. We cook the raw botanical powder into the selected hydroglycerin or oil carrier. Aqueous lots are released on pH, organoleptic, TAMC, and TYMC (total counts only). Oil macerates are released on organoleptic only. A sample COA is on this page; the lot-specific COA ships with the order.
Download sample Certificate of AnalysisStatements contained on this page (including any marked with *) have not been evaluated by the U.S. Food and Drug Administration. This product is a cosmetic raw material and is not intended to diagnose, treat, cure, or prevent any disease.
