For problems of blockage and a sensation of mucus in the nose, it will be good to do eucalyptus herbal tea inhalations in the evening without overdoing it, from time to time, inhaling the eucalyptus herbal teas. Eucalyptus may also be taken in capsule form, especially during winter, with a dosage of three per day, one before each meal, without exceeding one month.
In addition, ginger and lemon herbal teas will be effective for clearing the nose.
What the science says: essential oils
What the published research says about the remedies mentioned above, for context — the studies address material causes, while healing belongs to Allah.
Essential oils
Tea tree essential oil has documented effectiveness on acne (Antioxidants, 2023), peppermint oil on irritable bowel syndrome (Aliment Pharmacol Ther, 2022), lavender and others on anxiety (Pharmacol Res, 2022) — but these are powerful concentrates. Precaution: always dilute on the skin, never in the eyes nor undiluted by mouth without medical advice; they are forbidden for pregnant women (unless advised otherwise), children under 3 (under 6 for peppermint), and, for several of them, for asthmatics and epileptics.