·     Cedarwood (Cedrus atlantica)

• Key Compounds: Cedrol, Sesquiterpenes
• Mechanism:
  • Promotes sedation without muscle over-relaxation, supporting better airway tone during sleep.
  • Mild mucolytic and decongestant action through lymphatic activation.
  • Reduces sympathetic nervous system tension that may exacerbate mouth breathing.

·     Thyme (Thymus vulgaris)

• Key Compounds: Thymol, Carvacrol
• Mechanism:
  • Acts as a respiratory anti-inflammatory by modulating pro-inflammatory cytokines (IL-6, TNF-α).
  • Antimicrobial activity supports reduction of chronic sinus and throat congestion
  • Enhances airway epithelial repair and mucus clearance..

·     Peppermint (Mentha piperita)

• Key Compounds: Menthol, Menthone
• Mechanism:
  • TRPM8 receptor activation causes vasoconstriction and shrinks swollen nasal and pharyngeal tissues.
  • Cooling sensation increases nasal airflow and decreases pressure in the oropharynx.
  • Acts as a mild bronchodilator, improving overall respiratory comfort.

·     Lemon (Citrus limon)

• Key Compounds: Limonene, β-Pinene
• Mechanism:
  • Natural astringent and mucosal toner, helping reduce swelling in sinus and throat tissues.
  • Provides immune-stimulating and lymphatic draining support.
  • Mild vasotonic effect that improves drainage and reduces pressure buildup in upper airway tissues.

Carrier Oils:

MCT Oil

• Facilitates rapid absorption through skin into local vasculature.
• Lightweight and non-greasy, ideal for bedtime application.

Grapeseed Oil

• Rich in Vitamin E and Pro-anthocyanidins that support microvascular health.
• Enhances penetration of active essential oils and maintains skin hydration.

Mechanistic Summary Table