Using antiperspirants over time can leave some yellow staining, especially on white or light coloured clothes. The scientists at Sure have been working hard to develop antiperspirants which can offer superior anti-yellow stain protection.
To test how well the new Sure Invisible Black + White formula performs, we commissioned a blinded study which was conducted at an independent external laboratory. This study measured the level of yellow stain protection provided by Sure Invisible Black + White antiperspirant aerosol and the Nivea Invisible for Black & White antiperspirant aerosol.
In the test, two sets of white fabric swatches were tested, the first set with the Sure antiperspirant and the second set with Nivea antiperspirant. Other than that the sets of swatches were treated identically. The swatches underwent testing which replicated average application amount of antiperspirant, armpit conditions (including sweating) and clothes washing habits.
The level of yellow staining on the fabric swatches was then measured using a colorimeter. A colorimeter is an instrument designed to measure colour and is commonly used to measure intensity of stains. Yellow staining is measured on a scale called b*.
The graph showed in the TV advertisement and above illustrates the difference in the level of yellow stain protection between Nivea Invisible for Black & White antiperspirant aerosol and Sure Invisible Black + White antiperspirant aerosol.
SEE HOW SURE INVISIBLE BLACK + WHITE WORKS