We Protect

sensiva® PA 40 is the ultimate protection for sun protection

Consumers want sunscreen products that are effective, but higher SPFs present unique preservation challenges. To bridge this gap, schülke provides sensiva® PA 40 – peerless protection for your sunscreen formulations.

Sunscreen formulas based on organic sun filters become increasingly difficult to preserve as the SPF increases. This can be attributed to the increasing level of polar oil phase.

Sunscreens based on inorganic sun filters have grown increasingly popular. They also pose unique challenges in preservation.

schülke has found through extensive testing that sensiva® PA 40 provides superior preservation in sunscreens and other hard-to-preserve systems.


  • Antimicrobial stabilizer blend
  • Highly effective at low use levels
  • Enhancer for soft preservative systems
  • Mild humectant and emollient


  • schülke understands the complex demands of sunscreen formulation. Let us help you bridge the preservation gap.
    Call us at 888-267-4220 or click below to find out more!
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    Product description

    As more traditional preservatives are coming under attack, formulators are looking towards multifunctional additives with antimicrobial stabilizing properties to fill the void. sensiva® PA 40 builds on schülke's experience and the success of our half natural, half nature-identical sensiva® PA 30.

    Naturally occurring substances tend to be more organism-specific and can have color and odor issues. By using nature-identical and gentle synthetic materials, activity level, color and odor of sensiva® PA 40 can be controlled precisely and standardized. The consistency and availability of the material can also be managed to create a more sustainable formulation.

    sensiva® PA 40 includes Zemea® Propanediol, from Dupont Tate & Lyle BioProducts. This innovative, skin-friendly, 100% natural glycol alternative is used as a humectant or natural solvent in cosmetics and personal care products. Studies have shown that Zemea® can boost the efficacy of preservatives, potentially reducing the amount of preservatives needed in the formulation. In this unique blend, propanediol improves the antimicrobial activity of the other ingredients, allowing sensiva® PA 40 to be used at lower levels than most non-traditional preservation systems.

    Challenge tests performed on a variety of cosmetic formulations show sensiva® PA 40 to be an effective antimicrobial stabilizer at a use level of 0.5-1.5%.

    Schülke & Mayr GmbH has over 124 years of history protecting people and materials against infection and contamination. Its euxyl® brand provides numerous preservative blends for the cosmetic industry. These optimized combinations of active substances offer broad-spectrum efficacy, keeping cosmetic products free of microbial growth.

    The sensiva® and sensidin® brands include versatile, multifunctional skin care additives for personal care products. With their unique properties, they are suitable for use in a wide range of cosmetic applications, including creams, lotions and deodorants.

    With sensiva® PA 40, schülke has taken inspiration from Mother Nature. By combining natural, nature-identical and gentle synthetic components, sensiva® PA 40 has improved the efficiency and efficacy of non-traditional preservation systems.

    schülke's specialist expertise helps take the guesswork out of preservation. Contact us to find out how!