Sandalwood Paste · reference

Sandalwood side effects and patch testing

Sandalwood is well tolerated by most people, but contact dermatitis is documented and sandalwood is a recognised fragrance allergen. Most reported reactions to sandalwood products trace to adulterants and added fragrance rather than sandalwood itself. Patch test on the inner forearm for 24 hours before applying anything to the face.

By Ramin FakherUpdated

Sandalwood has a good safety record in topical use. That is not the same as being risk-free, and the most common cause of trouble is not the sandalwood.

The adulteration problem is a safety problem

Most commercial sandalwood powder and paste contains material other than sandalwood: fillers, dyes, synthetic fragrance compounds, preservatives. When somebody reacts to a “sandalwood” face pack, the sandalwood is often not the culprit — synthetic fragrance materials and dyes are considerably more likely to sensitise skin.

This is the practical reason to care about sourcing genuine material. It is not only about authenticity and price.

Known risks

Contact allergy. Sandalwood oil is a recognised fragrance allergen and features in standard patch-test series used by dermatologists. Sensitisation can develop after months or years of untroubled use.

Irritation from over-drying. Leaving paste on until it cracks leaves skin tight and can worsen dryness and flaking — most often reported by people using it daily on already-dry skin.

Photosensitivity. Not a well-established risk for sandalwood specifically, but some plant-derived preparations increase sun sensitivity. Rinse thoroughly before sun exposure.

Eye irritation. The paste is gritty. Keep it away from the eye area.

How to patch test

Worth doing once, and it takes a minute.

  1. Mix a small amount of the paste as you intend to use it.
  2. Apply a coin-sized patch to the inner forearm, where skin is thin and the test is visible.
  3. Leave for the same length of time you would leave it on your face.
  4. Rinse, then wait 24 hours before checking. Delayed reactions are the ones that matter; an immediate mild tingle is usually nothing.
  5. If there is any redness, itching or bumps, do not use it on your face.

Repeat the test whenever you switch supplier — batch-to-batch variation in an unregulated product is real.

Who should be more careful

Common questions

Can sandalwood cause an allergic reaction?
Yes. Sandalwood oil is an established contact allergen and appears in standard fragrance patch-test series. Reactions are uncommon relative to how widely it is used, but they are real and can develop after a long period of uneventful use.
What does a reaction look like?
Redness, itching, small bumps or a burning sensation, usually within a day of contact and confined to where the product was applied. Stop using it, rinse with cool water, and see a clinician if it spreads, blisters, or does not settle in a few days.
Is it safe during pregnancy?
Topical use of a simple wash-off paste is generally regarded as low risk, but sandalwood essential oil is much more concentrated and advice varies. Ask your midwife or doctor rather than relying on general guidance.
Can I use it on a baby?
Applying sandalwood to infants is a traditional practice in some households, but infant skin is thinner and more permeable, and the adulteration risk makes an unknown product a poor choice. Do not, without paediatric advice.

Sources

  1. A Comparison of the Composition of Selected Commercial Sandalwood Oils with the International Standardpmc.ncbi.nlm.nih.govCited for: Adulterants and synthetics present in retail sandalwood products.
  2. East Indian Sandalwood Oil Is a Phosphodiesterase Inhibitor: A New Therapeutic Option in the Treatment of Inflammatory Skin Diseasepmc.ncbi.nlm.nih.govCited for: Clinical context for topical sandalwood oil use.