Short answer: Clothing and skin-contact rules vary by model. Follow the exact manual; no universal cotton, sock, towel, or bare-skin rule is established.
Verify before use
- Approved clothing, liners, towels, body position, temperature, duration, and contact surfaces.
- Whether materials, fasteners, jewelry, lotions, oils, moisture, or medical devices are prohibited.
- Whether clothing preserves movement, heat awareness, and a reliable exit.
Do not add layers or insulation to intensify heat, and do not assume advice for another brand transfers. Stop for skin injury, dizziness, faintness, confusion, chest pain, unusual shortness of breath, or inability to cool normally.
Bottom line: Exact model instructions and health guidance control; clothing does not make an excessive exposure safe.
Evidence and limits
Dry-sauna studies do not establish a universal consumer infrared-blanket dose, meal interval, clothing rule, or aftercare protocol.
Source: dry-sauna systematic review.