Washed European Linen Core Sheet Set vs Classic Cooling Percale Fitted Sheet in Blue, Full: which is safer?

Where these two actually differ

• We flag Azo dyes and heavy metal colorants and Fiber shedding or microfiber release on the Brooklinen and not on the Brooklinen.
• We flag Formaldehyde-releasing resins in finishing, Azo dyes and heavy metal mordants and Allergenic dye residues or excess sizing on the Brooklinen and not on the Brooklinen.
• The Brooklinen is 100% European linen, washed finish where the Brooklinen is 100% cotton percale, which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.