STEPAN-MILD L3 A NEW MULTI-FUNCTIONAL SURFACTANT

STEPAN-MILD L3 A NEW MULTI-FUNCTIONAL SURFACTANT

Outline I. Innovation Philosophy II. Chemistry III. Performance Advantages IV. Physical Properties V. Functional Properties VI. Surfactant Properties VII. Performance Data VIII. Summary IX. Acknowledgements

Biodegradable Renewable Plant Derived Cost/ Performance Regionally sourced Reduced Freight 100% Active Higher Actives Cold Mix Low Energy Process Free Flowing Liquid

Anatomy of a Cleansing Formulation WATER Additives 2 Surfactant 1 Surfactant Salicylic acid / Essential oils / Polymers / Opacifiers / Others Cocamidopropyl betaine (CAPB) Coco monoethanolamide (MEA Amide) Others Sodium Lauryl Ether Sulfate (SLES) Sodium Lauryl Sulfate (SLS) Others

Chemistry O O O O Lactide ROH Cat. O O HO OR O Lauryl Lactyl Lactate R = Predominantl C 12

Performance Advantages 100% Bio-renewable Carbon Clear liquid Low color Low odor Easy to use Better performance Mild

Typical Physical Properties Appearance at 25 C Clear liquid Actives, % 100 Odor Ionic Type mild nonionic Flashpoint, C F (PMCC) > 94 (> 201) Freeze Point, C -16.7 Pour Point, C -11.8 Viscosity, cps at C 50 Color, Klett (as is) 20-50 Refractive Index at 25 C 1.4439 Saponification Value, mg KOH/gm 334 Density, g/ml (lbs/us gal) 0.965 (8.06) RVOC, U.S. EPA, % 0

Functional Properties Viscosity builder Foam booster/stabilizer Provides skin softness and moisturization Emulsifier Emollient Solubilizer for active ingredients (e.g. salicylic acid, triclosan)

Equilibrium Surface Active Properties Surfactants SLES-2 SLES-2 / L3 SLES-2 / L3 SLES-2 / CAPB SLES-2 / CAPB SLES-2 / MEA Amide SLES-2 / MEA Amide SLES-2 / Secondary 1/0 14/1 4/1 14/1 4/1 14/1 4/1 CMC (mg/l) 171.1 25.8 10.0 135.3 96.3 92.5 38.1 Surface Tension @CMC (mn/m) 24.8 29.5 32.3 25.3 24.8 25 27.9 Area/molecule (Å 2 ) 49.9 28.04 27.1 41.485 46.17 38.51 30.6 Similar results were obtained with SLS primary surfactant. STEPAN-MILD L3, as a secondary surfactant, is more efficient in the reduction of CMC of SLS and SLES primary surfactants when compared to CAPB and MEA Amides. Reduced CMC can lead to improved detergency and improved mildness in finished formulation.

Human Repeat Insult Patch Test (HRIPT) SCORE 1400 1200 1000 800 600 400 200 0 SLS CAPB L3 MEA Amide All Formulas: 12% SLES-2/3% Secondary Surfactant STEPAN-MILD L3, when used with CS-230, is as mild as commonly used secondary surfactants such as Cocamidopropyl betaine, Disodium Laureth Sulfosuccinate and Sodium Lauroamphoacetate.

Dynamic Surface Tension at 0.2% Total 80.00 Active Surface Tension (mn/m) 70.00 60.00 50.00 40.00 30.00 SLES-2/CAPB at 4/1 SLES-2/L3 at 14/1 SLES-2/MEA-Amide at 4/1 SLES-2/L3 at 4/1 20.00 10 100 1000 10000 100000 Time (milliseconds) At 0.2% active, surfactant systems containing L3 saturate the interface faster compared to CAPB and MEA Amide. L3 with SLES has lower dynamic surface tension at the same use level compared to CAPB and MEA Amide. Lower surface tension can provide improved flash foam in finished formulation.

Hand Wash Results (8-10 panelists) Leading Mass Market Body Washes +1% STEPAN-MILD L3 Antibacterial: SLES & CAPB Moisturizing: Sodium Trideceth Sulfate, SLS, Sodium Lauroamphoacetate 1.3 1.3 1.0 1.0 120 Softness 0.7 1% additive Control (no additive) Softness 0.7 0.4 167 1% 0.3 additive 0.0 Control (no additive) 0.4 0.1 106-0.2-0.2 0.1 0.4 0.7 1.0 1.3 Moisturization (Not Dry) 0.1 125-0.2-0.2 0.1 0.4 0.7 1.0 1.3 Moisturization (Not Dry) Stepan-Mild L3 imparts silky afterfeel that translates to perceived skin softness

STEPAN-MILD L3 in Cleansers: Skin Hydration after Rinse-off Treatment Hydration improvement compared to untreated skin 25% Skin hydration (%) 20% 15% 10% 5% 0% 0.5 1 2 4 24 2% STEPAN-MILD L3 + 12% actives SLES-1 4% STEPAN-MILD L3 + 12% actives SLES-1 Time after treatment (hours) Both formulations show statistically significant results for hydration improvements compared to untreated skin and may be considered as hydrating up to 24 hours. Test conducted by independent testing laboratory, One Treatment, Corneometer measurements, 11 volunteers.

Theoretical Model: How does STEPAN-MILD L3 do it? STEPAN-MILD L3 Solubilization and Deposition Model In Product Mixed micelle formation with Stepan-Mild L3 L3 addition Micelle Mixed micelle with L3 During the Wash + a) Some L3 deposits on skin and hair due to filtration and hydrophobic interactions moisturizing and conditioning benefits are provided. In the bottle In Use Micelle ruptures and L3 is released b) Some L3 is resolubilized and rinsed away

Foaming Data Upon Titration with L3 300 250 foam volume, ml 200 150 100 50 12% SLES-X + 3% CAPB 0 SLES-1 SLES-2 0 1 2 3 4 5 In general, foam volume decreases as STEPAN-MILD L3 level increases; however, foam morphology changes from loose to creamy.

Viscosity Stability 6000 RT Viscosity (cps) 4000 2000 0 5C 42C 50C 0 1 2 3 4 Weeks Formulations using a 14:1 ratio of SLES-2 and STEPAN-MILD L3 show good viscosity stability after storage at different temperatures.

ph Stability ph 7 6 5 RT 5C 42C 50C 4 0 1 2 3 4 Weeks Formulations using a 14:1 ratio of SLES-2 and STEPAN-MILD L3 exhibit good ph stability after storage at different temperatures.

What Does It All Mean? Current With L3 WATER ADDITIVES 2 Surfactant WATER ADDITIVES L3 1 Surfactant 1 Surfactant Improved Performance Body Wash w/ L3

The End Result

Acknowledgements Stepan Company NatureWorks Aaron Brown Shane Wolfe Irene Shapiro Anatoly Dameshek Susan Dong Branko Sajic Teresa Manuel Jim Faunce Lela Jovanovich Curt Gurnea Manuel Natal Joe Schroeder