Musk Ambrette to Ambrettolide Substitution Guide
Comprehensive guide for substituting discontinued musk ambrette with modern ambrettolide in vintage amber formulations. Includes substitution ratios (0.3-0.5:1), performance comparisons, and technical formulation adjustments for authentic 1970s-era character with contemporary safety compliance.
Modernizing Vintage Iris Formulations: Technical Guide
Technical guide for updating 1991-era iris formulations with modern ingredient substitutions. Covers alpha-campholenate replacement with isobornyl acetate, trans-2-nonenal versus violet leaf absolute comparison, and methyl ionone gamma specifications for contemporary transparency.
