They stem from genuine cellular-level protection
Mechanistically it is described as neurotrophic, meant to mimic the bodys own nerve-growth factors, the proteins named BDNF, NGF, GDNF, and CNTF that keep neurons alive and wire them together, and to support the survival of cells and the formation of connections
David G
[DOI] [PubMed] [Google Scholar] Gordon-Grossman M
While DI water is typically neutral, its exposure to the atmosphere and the absorption of gases like CO can cause its pH to shift slightly into the acidic range, typically between 6.0 and 6.4
Other normal purging signs include mild dryness or flaking as dead cells shed more rapidly, temporary sensitivity that remains manageable, and brief periods of dullness before radiance emerges