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The Science Behind Methylheptylglycerin (MHG): A Natural Deodorant Solution

As the demand for natural, safe, and effective deodorants grows, formulators and consumers alike are searching for ingredients that offer both performance and sustainability. Enter Lexgard® MHG Natural MB, a natural multifunctional ingredient developed by Inolex and designed to tackle malodor while supporting a healthy microbiome. Inolex's innovation was recently highlighted at the 34th IFSCC Congress in Brazil, where MHG's exceptional efficacy in deodorant applications was demonstrated.

Medium-Chain Terminal Diol Technology

Figure 1: The C6 - C10 alkyl chain and terminal hydroxyl groups of MCTDs enable effective disruption of bacterial cell membranes.

MHG is a biobased medium-chain terminal diol (MCTD), an important type of preservation technology that interacts with the lipids of bacterial cell membranes, eventually leading to cell collapse.

Effect of MHG on the Skin Microbiome
In TK studies, MHG inhibited 76.1% of C. xerosis (a key contributor to malodor formation) in just 30 seconds.

MHG exhibited greater inhibition of S. aureus as compared to S. epidermidis. (MIC: 0.25 vs. 0.50 wt%)
S. aureus: Associated with inflammatory conditions such as eczema and acne.
S. epidermidis: Commensal ("friendly") bacteria. Inhibits S. Aureus biofilm formation, reducing inflammation.

Understanding MHG: A Natural Powerhouse

MHG is derived from castor oil-based 2-octanol and Mass Balance RSPO-certified palm glycerin, combining sustainability with advanced functionality. It works by inhibiting the growth of key bacteria responsible for body odor, such as Corynebacterium xerosis and Staphylococcus aureus, without disrupting the skin's natural microbiome. This makes MHG ideal for formulating natural deodorants that are both gentle and highly effective.

Methodology

MHG was tested for deodorant activity through the evaluation of the Minimum Inhibitory Concentration (MIC), Time Kill (TK) and Zone of Inhibition (ZoI) against four bacteria strains associated with species responsible for malodor formation (S. aureus, S epidermidis, E. coli and C. xerosis). These assessments aim to evaluate MHG’s efficacy on inhibiting the growth of these bacteria, by both qualitative and quantitative methodologies

MIC is the lowest concentration of MHG that completely inhibits growth of the four bacteria, while TK is a measure of the reduction of bacteria in a determined period of time for a given MHG concentration. ZoI is a visual measure of the halo formed by the MHG due to its inhibition of microorganism growth, in turn being an important signal of the sensitivity of the bacteria to the ingredient tested.


Featured Technologies

Lexgard® MHG Natural MB

100% Natural Preservation & Anti-Soaping Agent
  • Anti-soaping effect for silicone-free emulsions
  • Odor protection for natural deodorants
  • 100% plant-based
  • Strong protection against bacteria & yeast
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The Deodorant

This natural deodorant has a smooth glide and dry finish on skin. Natural anti-bacterial agents prohibit the growth of odor-causing bacteria.

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Soft Spot Natural Deodorant

Celebrate the refreshing impact of natural ingredients with our 83% natural deodorant stick. Help your sweaty spots become soft spots with velvety softness and seamless application free from stickiness. Speaking of soft spots, Inolex has a soft spot for natural ingredients.

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Smooth Glider Clear Deo

Elevate your daily routine with a touch of luxury and efficacy. Introducing the Smooth Glider Clear Deodorant, a 85% natural clear gel stick that elevates your underarm routine. Experience a fresh and hydrating sensation with a smooth glide and a uniquely powdery soft touch.

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Satin and Salt Anti-Perspirant

Experience the luxurious fusion of satin touch and salt efficacy. Crafted without silicones and with 62% natural ingredients, this anti-perspirant stick delivers aluminum salt just the way you like it—with a satin glide, some flash-off, and a silk-like, finishing touch.

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