Definition: Resinous & Balsamic Fragrances

One of the most elusive terms in fragrance terminology appears to be -according to readers' comments- "resinous" and "balsamic", as relating to perfumes. The raw materials falling under the umbrella of resins and balsams are among the most ancient components of perfumes, often the basis of the Oriental family of scents and lending their soothing opulence and depth to other families, such as the Chypres. They make their appearence known in any category though: florals, fougères, hesperidics also benefit from a touch here and there.

The distinction between resin and balsam is one of form, on a fundamental level: Simply put and generalising, resinous materials come in the form of solidified, gum-like "tears" seeping from the elixir vitae circulating into the bark of big trees, such as the Boswellia Carteri (which produces frankincense). Balsams on the other hand are trickly materials, not necessarily tree secretions, often coming as they do from flower pods or bushy twigs (such as vanilla orchids or the Mediterranean rockrose). But there are exceptions to every rule: Opopanax, though resinous smelling itself, actually comes from a herb, opopanax chironium.
So the real focus when referencing balsamic and resinous terminology is how the materials actually smell and how they're different or common in scent, rather than what their origin is. 
Therefore, for ease, resinous & balsamic materials are classified into 3 distinct olfactory profiles according to their aromatic properties first and foremost.

Soft balsamic smelling ingredients include:

• vanilla (from the vanilla orchid, the rich pod having a more complex rum-like note than the popular synthetic ethyl vanillin)

• benzoin gum (from Styrax Tonkiniensis with a sweetish, caramel and vanillic facet; benzoin Siam or benzoin Sumatra are used in perfumery)

• Peru balsam (coming from the Myroxylon, ~literally "fragrant wood" in Greek~ or Quina/Balsamo, a different species of which also produces Tolu balsam)

• Tolu balsam (close to Peru balsam, but a little sweeter and fresher)

• cistus labdanum (leathery, ambery, deep, coming from the rockrose bush and traditionally harvested from the hairs of goats who had grazed on the rockrose).

These materials have a gentle tone, while at the same time they're softly enveloping and have a pronounced character. They fix flowers into lasting longer and thanks to their properties when used in large quantities produce the semi-Orientals or the florientals (in conjunction with rich floral essences). 
A great example of a fragrance featuring copious amounts of Tolu balsam is Tolu perfume by Ormonde Jayne. The opulence of the balsamic note mollifies the rest of the composition, giving the golden sheen of a multi-faceted citrine. Tolu also makes floral notes more candied: in Fracas by Piguet it acts on the tuberose, on Gold by Donna Karan it enhances the ambery lily.
Compare and contrast with the balsamic base of Guerlain's Vol de Nuit which features a generous helping of Peru balsam; the oriental accord gives it its opulence under the green top note. In Ambre Sultan by Lutens, Peru balsam pairs with its traditional counterpart, an oriental amber accord. Elixir des Merveilles is another one which features balsam of Peru for its sweetly grounding qualities.

For labdanum, grab Donna Karan Labdanum, L'Air du desert Marocain by Andy Tauer, La Labo Labdanum 18 or Madame X by Ava Luxe: they're full of it.
The purest incarnation of benzoin in non gum form is Papier d'Armenie, the traditional scented little papers in a cute notebook, which burnt produce a clearing, anti-microbial atmosphere to one's home. Short of that, if you don't travel to Europe often, you can get a sample of Bois d'Armenie by Guerlain, or Prada Candy. Benzoin is very versatile spanning the fragrance families from citrus to woods and florals and its heft is therefore used frequently as it complements the other notes beautifully. Chanel's Coromandel fuses the vanilla-cinnamon notes of benzoin with a white chocolate note to render a delicious and sophisticated gourmand fragrance. Both benzoin and Tolu balsam make up the surprisingly monastic backdrop of Bal a Versailles by Jean Desprez, allied to the austerity of cedar.

If you are seeking a lush balsamic composition with multi-nuanced orientalia, seek no further than Mecca Balsam by La via del Profumo; it features labdanum, real oud and franckincense as well, so it's a composite that allows one to see how categories can be combined.

Vanillic fragrances are of course widely understood by everyone, so another article of a different scope, focusing on their merits and faults, is in order.

Resinous balsamic smelling ingredients include:

• opoponax/opopanax (also called "sweet myrrh" ~though no relation~ from the Opopanax chironium herb, scented between lavender & amber)

• frankincense/olibanum (the lemony-top, smoky smelling "tears" of the Boswellia carteri tree, called lubbān in Arabic)

• myrrh gum (a waxy oleoresin with a bitterish profile from the Commiphora myrrha)

• birch tar (from "cooked" birch wood, tar-smelling)

• elemi (a peppery, lemony, pine-like yellow oil coming from the steam-distilled or treated with volatile solvents resin of the Canarium Lizonicum)

• styrax (resin from the Liquidambar Orientalis tree, with a scent reminiscent of glue and cinnamon)

Valued since antiquity, resins have been widely used in incense and perfumery. Highly fragrant and antiseptic resins and resin-containing perfumes have been used by many cultures as medicines for a large variety of ailments. It's no coincidence that the three Magi gave baby Jesus the gifts of Frankincense, Myrrh and Gold. Traditionally used to make incense (King Solomon regarded opoponax as the noblest incense gum), even nowadays in the Middle East and the Mediterranean basin frankincense and myrrh "tears" are the incense par excellence still. These materials are deeper, with a lingering trail which adds originality and projection to a composition. Since they themselves typically come from the bark of trees in the form of crystalised resin "tears", they pair very well with woody scents.

If you want to get a taste of how some of the more "esoteric" of these smell, , say opoponax grab yourself the Diptyque Opopanax scent in either room spray or candle, as well as their Myrrh candle. They provide the scent in isolation. The iconic Shalimar as well as the masculine counterpart Habit Rouge owe their "flou" hazy effect in opoponax allied to orange blossom. For myrrh, Myrrhe Ardente in Les Orientalistes line by Annick Goutal and La Myrrhe by Serge Lutens provide two nuanced and quite different "readings" of the myrrh gum in complex compositions.
Athonite frankincense in the black variety is pure frankincense/olibanum gum (it's pliable when you rub it, like chewing gum), rising in clean, citrusy-smoky ringlets on the air; I burn it on small coal tablets regularly. There are many frankincense fragrances in the niche market, the truer perhaps being Avignon by Comme des Garcons, but the whole Incense Series is to be explored for the truly interested perfume lover.
Tauer's Incense Extrême is a good starting place for frankincense variants, based as it is on the Boswellia serrata (Indian incense) at a 25% concentration.

Birch tar is easily detected in compositions of the Cuir de Russie type (from Chanel Cuir de Russie to Piver's and Guerlain Cuir de Russie). This is also a material that can be classified in the sub-group of phenolic smells. It is pungent and dark.
Elemi is often used in masculine blends to give at the same time cooling piquancy and warmth thanks to its peppery top note: try Gucci by Gucci, notice the top note of L'Instant pour Homme (Guerlain) and the unique Eau de Naphe by Comptoir Sud Pacifique. For styrax, remember that the resin has a leathery facet with incense tonalities (and has been an important supporting player in "Cuir de Russie" compositions, such as Chanel's). Notice it in the drydown of Carven's Ma Griffe, in Poivre 23 by Le Labo and in No.11 Cuir Styrax by Prada. Lutens uses it beautifully in several of his scents, notably in the base note of Tubereuse Criminelle and Cuir Mauresque.

Nota bene that even though fir, pine and copal essences come from coniferous trees themselves,  I am not including them in the resinous and balsamic classification as they're really terpenic-smelling (a perfume definition to be elaborated on in a subsequent article).

There is also a sub-set of powdery balsamic smelling ingredients which do not come in resin or balsam form, therefore they are not classified into this category via origin at all, but rather via their scent profile alone. This includes: orris root (the Iris Pallida rhizome and also the synthetic irones-rich reproductions), several musks of synthetic origin, and carrot seed oil (which can give an orris scent in itself).
Amber mixes (refer to what amber is and its difference from ambergris on this link) can also be powdery balsamic smelling: the inclusion of benzoin (which gives a sweetish, baby talc note) and vanilla in the mix of ingredients in amber is the culprit. In French terminology/classification of orientalised perfumes they're refered to as "parfums ambrés" (even when not entirely focused on amber). For instance Obsession, the original Magie Noire (not the reformulated which is greener, more chypre) or Moschino by Moschino (again the original from 1987) are examples of perfumes "ambrés". It is important NOT to confuse between a balsamic/ambery powdery ambience (which is typically sweeter) and one which is powdery/dry (such as in Aromatics Elixir, Ma Griffe, Flower by Kenzo, DK Cashmere Mist): the two terms though very close are not interchangeable.

In concluding, the necessity of establishing a common language for scent among people who talk about the same perfumes increasingly arises. Even though we commonly use subjective terms to denote our feelings, the proper terminology, in accordance to how perfumers talk among themselves, aids a thorough understanding  and enhances our communicating our impressions on an immediately graspable context. It is this need which we try to address with our articles on Perfume Vocabulary and Definition on PerfumeShrine. If you haven't caught up with our relevant articles, here's what you might have missed:

• Definition: Indolic vs. Non Indolic
• Definition: Lactonic, Creamy, Milky, Butyric
• Definition: Powdery & Dry in Fragrances
• Definition: Soapy in Fragrances
• Definition: Phenolic, Terpenic, Camphoraceous scents
• Definition: Which Material Produces Which Note/Effect?

Photo of resin drops, some rights reserved by flod/flickr, censer pic via St.Dunstan's Priory