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Whitening toothpaste not clean enough? Matching the proper RDA gradient matters most.
Created on 07.23
Consumer demand for whitening toothpaste keeps rising. In 2025, functional whitening toothpaste already reached 41% market penetration. But many products either don't clean well enough or are so abrasive they damage enamel. The key to balancing cleaning power and gentleness is the silica's RDA value.
Zhongqi's abrasive silica comes in several RDA tiers, from the gentle ZLDIO-T115 (RDA \80) up to the high-cleaning ZLDIO-T124 (RDA \160), covering a wide performance range. Our in-house lab runs actual abrasion and stain-removal tests — we don't just print numbers on a spec sheet.
The particles are near-spherical with no sharp edges, removing extrinsic stains quickly without scratching enamel. Whiteness is above 93, so the paste looks clean, not grayish, which adds visual appeal for whitening claims. Which tier you pick depends on your positioning: low RDA for sensitive teeth or kids' toothpaste, high RDA for heavy-stain whitening formulas — there's no need to chase the highest number blindly.
Some imported spherical silica grades have long order lead times. We ship from stock in seven days with full documentation, ready for product filing. The complete RDA gradient comparison table is available for download on our product page.
Brands building a whitening line should test two RDA tiers side by side — cleaning power and mouthfeel become obvious pretty quickly.
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