2010 TRI/PRINCETON CONFERENCE 217 D as well, which produced the same results. Based on these test results, SLES produced greater foam stability than SLS, however SLS produced higher levels of foam. Quat AMM and MMM performed superior in SLS and SLES compared to all the samples tested, including the controls. AMM showed superior foaming capabilities, by achieving the greatest foam height in SLS (500 ml), as well as having one of the best foam stabilities in SLES (over 1440 minutes). This stability was roughly ten times greater than all other quats and controls tested, with the exception of AEG, CaMB, MMG, and MMM, which all had foam stabilities of over 1440 minutes. It can be concluded that these quaternium compounds did not have a great effect on the expected foaming capabilities of SLS or SLES, with the exception of AMM and MMM. These two quat solutions increased foam stability by a factor of ten without suppressing foam height. (C) SUBSTANTIVITY (AQUEOUS DELIVERY SYSTEM) PURPOSE Determine the substantivity of quaternium compounds in an aqueous delivery system to human hair. PROCEDURE Test solution: ARL-2-73A1 LOT#: 020604 Stock solution: ARL-2-73A LOT#: 020604 Direct red 80 (Aldrich 365548-25G, LOT#: 04927) Glacial acetic acid (Aldrich 338826-25ML, LOT#: 12405LA) Treatment solutions Name w/w Formula # 35% active quat solution 0.5% ARL-4-85A-N Deionized water 99.5% Control: Polyquaternium-10 RESULTS All quat solutions, with the exception of three (AEG, AMG, CaMG) exhibited cationic substantivity when delivered to hair tresses in a 0.5% aqueous solution (see Table IX, p. 218 Figures 1 and 2, pp. 222, 223). It is likely that these quat solutions did not exhibit substantivity because of their glyceryl groups. However, quat DMG, which also con- tained a glycerly group, did exhibit cationic substantivity. It is also possible that the quat group was damaged, or reacted out somewhere in the study, because they were no longer cationic.

JOURNAL OF COSMETIC SCIENCE 218 (D) SUBSTANTIVITY (ANIONIC SURFACTANT SYSTEM) PURPOSE Determine the substantivity of quaternium compounds in an anionic surfactant delivery system to human hair. PROCEDURE – STM – PE#4 Quat solutions: Titrated quat solutions INCI: Polyquaternium-10 Surfactants: Sodium lauryl sulfate Sodium laureth sulfate Lot # Name ARL-4-86A ARL-4-86B ARL-4-86C ARL-4-86D 565720 Polyquaternium 10 0.5% 0.5% — — 0321605 Sodium lauryl sulfate 40.00% — 40.00% — 04107056 Sodium laureth sulfate — 40.00% — 40.00% 062906 Deionized water 59.50% 59.50% 60.00% 60.00% Table IX Cationic Substantivity: 0.5% Quat Solutions Result Quat solution Tress sample Treatment Positive Negative AMB A ARL-4-85A Pink — AME B ARL-4-85B Purple — AMG C ARL-4-85C — No color change AMM D ARL-4-85D Purple — AEB E ARL-4-85E Purple — AEG F ARL-4-85F — No color change CaMB G ARL-4-85G Purple — CaMG H ARL-4-85H No color change DMB I ARL-4-85I Purple — DMG J ARL-4-85J Purple — DMM K ARL-4-85K Purple — MMB L ARL-4-85L Purple — MMG M ARL-4-85M Purple — MMM N ARL-4-85N Purple — — O Positive control Pink — — P Negative control — No color change