L-Ornithine
What is L-Ornithine?
L-Ornithine is the biologically active L-enantiomer of ornithine, a non-proteinogenic amino acid structurally characterized as (2S)-2,5-diaminopentanoic acid with a basic side chain amino group. It plays a role in the urea cycle for ammonia detoxification in the body and occurs naturally in some foods and metabolic processes. In cosmetics, L-Ornithine falls under the skin conditioning agent category, commonly featured in moisturizers, serums, and treatment products. It works by drawing moisture to the skin's surface, aiding hydration retention, and contributing to the maintenance of the skin's supple texture. Typically sourced through biotechnological fermentation of sugars or chemical synthesis for high purity, it remains stable across a range of pH levels in formulations, allowing effective incorporation without altering product integrity.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Supports skin softness by aiding moisture balance.
Promotes smoothness through conditioning effects.
Helps maintain skin flexibility for a supple feel.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals with normal to dry skin seeking conditioning. | No specific groups identified from safety data. |
| People using moisturizers for daily hydration support. | Persons with known amino acid sensitivities, though rare. |
| Those incorporating amino acid-based skincare routines. | Individuals preferring to avoid less common cosmetic ingredients. |
Safety Notes
- Rated low hazard by EWG with scores of 1 across concerns.
- Non-comedogenic with a rating of 0, suitable for acne-prone skin.
Frequently Asked Questions about L-Ornithine
What is L-Ornithine used for in skincare?
It functions as a skin conditioning agent to help maintain softness, smoothness, and flexibility.
Is L-Ornithine safe for daily use?
It has a low hazard rating from EWG and shows no significant safety concerns in cosmetics.
Does L-Ornithine clog pores?
No, it has a comedogenic rating of 0, making it suitable for all skin types.