Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Heartwood, particularly from trees such as sandalwood (Santalum album) and teak (Tectona grandis), has a long-standing tradition of use in skin care across various cultures, especially in South Asia. Traditionally, powders and oils derived from heartwood have been employed to treat a variety of skin conditions, including acne, blemishes, and general skin irritation. For instance, sandalwood paste is widely used in Ayurvedic and Unani medicine as a soothing agent and for its purported cooling and anti-inflammatory properties. Historical texts and ethnobotanical records describe its application for promoting clear, healthy skin, and for managing conditions such as rashes and eczema.

However, scientific validation for these uses is limited. While some laboratory studies have identified antimicrobial and anti-inflammatory compounds in sandalwood oil, robust clinical trials supporting the efficacy of heartwood preparations in general skin care are scarce. The active constituents, such as santalols, may contribute to barrier protection and mild antimicrobial effects, but the translation of these findings into evidence-based skin care recommendations remains incomplete. Consequently, the use of heartwood in skin care is primarily justified by tradition, with some preliminary, but not definitive, scientific support. The evidence rating is a 2, as traditional use is substantial, but scientific validation is incomplete.

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