“Exact-ingredient evidence: DEGBE can permeate human skin in vitro, supporting solvent/penetration behavior rather than intrinsic skin-care benefits.”

“Exact-ingredient evidence: DEGBE was included in comparative rat/human percutaneous absorption testing; useful for safety and delivery assessment, not a direct skin-benefit claim.”

“Closest ingredient-family evidence: glycol ethers show measurable in-vitro skin absorption, supporting their vehicle/solvent role but not moisturization, anti-aging, or barrier-repair benefits.”

“Closest related glycol ether evidence: diethylene glycol monoethyl ether, not DEGBE, is reviewed as a topical dermatology solvent/penetration enhancer with tolerability data, but this is not direct evidence of DEGBE skin benefits.”