Dry-Flo® Pure

• Soft, velvety feel
• Hydrophobic
• Oil adsorbent
• Natural polymer
• Free flowing/anti-caking
• Fine, uniform particle size
• Easy to use
• Environmentally friendly
• Improves aesthetics and mitigates greasiness of lotions, creams and ointments
• Improves aesthetics and flow properties of powders
• Does not whiten on skin

• The starch-based product can be utilized as a talc replacement in body powders, adsorbing moisture without caking.
• In anti- perspirants, Dry-Flo® Pure starches enhance the visual whiteness of a stick, for example, without contributing to whitening upon application to the skin.
• In color cosmetics, Dry-Flo® Pure starches can be incorporated into liquid or powdered make-up products to improve the aesthetics of the formulation and to adsorb excess oil from skin.
• Perhaps the most distinctive property of these remarkable products is their unique ability to mitigate the greasiness produced by occlusive agents used in lotions, creams and ointments.
• In both aqueous and anhydrous products for skin care, Dry-Flo® Pure starches reduce the perceived oiliness of formulations, leaving a soft, dry and matte finish on the skin.
• Because the starches have a broad incorporation range, the amount of Dry-Flo® Pure starches can be adjusted for very specific formulation aesthetics.
• Sunscreens can also benefit from the addition of Dry-Flo® Pure starches to the formula.
• The starches can improve aesthetics and mitigate greasiness in the formulations without whitening on the skin.

Dry-Flo® Pure starches are commonly used as an aesthetics modifier in aqueous emulsions as well as in anhydrous ointment formulations. The method of incorporation, which is especially important when adding the starch to an aqueous emulsion.

1. Aqueous emulsions

• Dry-Flo® Pure starches are hydrophobic and thus not wetted by water alone.
• The preferred method of incorporation into an emulsion is to wet out the starch in water soluble humectants or in oils.
• Post add the slurry to the emulsion below 45°C, on cool down.
• The Dry-Flo® Pure starches can be added as a powder directly to the emulsion with proper mixing.
• Again, care must be taken to incorporate the starch at 45°C or below when used in aqueous systems.
• If temperatures above 50°C are encountered, the starch granule begins to partially solubilize, reducing its effectiveness as an aesthetics control agent and potentially increasing the formulation viscosity.

2.Anhydrous ointments

• Combine all ingredients, except for Dry-Flo® Pure starches and heat to melting. Mix until homogeneous.
• Slowly sift in the Dry-Flo® Pure starches and mix until uniform.
• Maintain temperature above the melting point of the combined oleaginous materials; the starch will remain in the system as a particulate.
• Note that the temperature constraint outlined for aqueous emulsions does not apply in anhydrous systems.
• The Dry-Flo® Pure starches will be unaffected up to 80°C in non-aqueous formulations.

Once added to either an aqueous emulsion or an anhydrous product, the Dry-Flo® Pure starches can be homogenized or milled without affecting its properties.
Because Dry-Flo® Pure starches are organic materials, it is susceptible to bacteriological attack. Suitable preservation is recommended for systems containing the Dry-Flo starches.

Greasiness mitigation
In a blind panel test involving 20 participants, the anhydrous ointment described below was overwhelmingly selected as being far less greasy than the same formula control without Dry-Flo® Pure starches.

Non-whitening

• Using the same formula above, panelists found that it produced a clear, translucent coating on the skin.
• Whitening was not perceived in spite of the relatively high loading of the Dry-Flo® Pure starches in the ointment.

In addition, actual reflectance measurements were performed on swatches of natural worsted wool which had been uniformly coated with lotions containing Dry-Flo® PPure starches or micronized titanium dioxide.

Higher reflectance values relate to greater perceived whiteness on skin.

Reflectance was measured directly using a model Micro S-5 Brightmeter manufactured by Technidyne Corp., New Albany, IN.

Substantially less reflectance was measured with 10% Dry-Flo® Pure starches than with formulas tested which contained micronized titanium dioxide.

• Dry-Flo® Pure starches are finely divided organic particulates.
• When handling, avoid generation of dust.
• Use in well ventilated area.
• Use of a dust mask is suggested.
• Exercise good housekeeping practices.
• Avoid contact of the Dry-Flo® Pure starches powders or dust with heat, sparks or open flame.