Short answer
Most contemporary scholars, Hanafis included, treat shellac as halal. It is a resin that the lac insect secretes onto tree branches, not the insect's body, so it is compared to honey rather than to carmine, which is made from crushed insects. Some prefer to avoid it as a precaution.
Shellac is generally treated as halal, as an insect secretion that is pure, like honey and silk, rather than the insect itself, which the school does not eat. Insects with no flowing blood are not impure, so any trace of them does not make food impure.
The four schools agree on this.
Explanation
Shellac comes from the lac bug, a tiny insect in India and Thailand. The females cover tree branches with a resin, which is scraped off, melted, filtered and refined into flakes. Dissolved again, it becomes a glossy coating. In food it is called shellac, confectioner's glaze, resinous glaze or E904.
The Hanafi school does not allow eating insects other than locusts, which is why carmine, made by crushing cochineal insects, is not eaten. Shellac is different: it is a substance the insect produces, not its flesh. The Quran describes honey as a drink that comes out of the bee's body, and Muslims have always eaten it; silk, spun by a caterpillar, is likewise pure. On that analogy, most contemporary scholars and halal certifiers accept shellac.
Some scholars advise caution because refined shellac can contain traces of insect bodies. Since insects without flowing blood are not impure in the Hanafi school, and the trace is minute and changed by refining, most do not consider this a problem. If you prefer to be careful, you can choose products glazed with carnauba wax or other plant glazes.
Where you will find it:
- shiny coatings on sweets, chocolate-covered raisins and jelly beans
- the wax coating on some apples and citrus fruit
- coatings on tablets and supplements
Shellac nail polish is an unrelated cosmetic product; like other polish, it blocks water from reaching the nail during wudu. Check other ingredients with the halal food checker.
The evidence
Quran, Surah An-Nahl 16:69
ثُمَّ كُلِى مِن كُلِّ ٱلثَّمَرَٰتِ فَٱسْلُكِى سُبُلَ رَبِّكِ ذُلُلًۭا ۚ يَخْرُجُ مِنۢ بُطُونِهَا شَرَابٌۭ مُّخْتَلِفٌ أَلْوَٰنُهُۥ فِيهِ شِفَآءٌۭ لِّلنَّاسِ ۗ إِنَّ فِى ذَٰلِكَ لَءَايَةًۭ لِّقَوْمٍۢ يَتَفَكَّرُونَ ﴿٦٩﴾
Then eat from all the fruits and follow the ways of your Lord laid down [for you]." There emerges from their bellies a drink, varying in colors, in which there is healing for people. Indeed in that is a sign for a people who give thought.
A substance produced by an insect, honey, is lawful, the basis for the analogy.
Sahih al-Bukhari 52
Sahih... الحلال بين والحرام بين وبينهما مشبهات ...
"The lawful is clear and the unlawful is clear, and between them are doubtful matters."
Those who see shellac as doubtful may leave it as a precaution.
Where the ruling is recorded
- al-Hidaya, Kitab al-Dhaba'ih, on what may and may not be eaten. Insects are not eaten, except locusts.
- Radd al-Muhtar (Ibn Abidin), Kitab al-Taharah, Bab al-Anjas. Creatures without flowing blood are not impure.
Checked by our team. For a more accurate answer to your own situation, consult a scholar. Quran translation by Sahih International. Hadith Arabic from the standard editions of the six books and the Muwatta, with gradings as recorded there; the English is our own rendering. Spotted a mistake? Tell us.