Skin flooding pairs humectant serums applied to damp skin with an occlusive seal; dermatology sources back the ingredients and the logic while cautioning that more layers does not mean more moisture.
Evidence supports petrolatum as a strong water-loss blocker, but dermatology sources say slugging depends on skin type and does not treat acne.
The rice-based clinical research tests purified rice bran compounds in engineered formulas, while the pantry ingredients with real human-trial data are virgin coconut oil and colloidal oatmeal.