今天受了大家蛊惑，洗发后配了护发油，4d rosemary+2d cedarwood+15ml hazelnut+1ml evening primrose，趁头发湿时涂到了头皮上。

1min后，头皮开始发热，约3min时停止，改为后背酸酸软软的发麻，然后向下一直延伸到大腿，然后到脚底，像是发烧时那种很虚的感觉。坚持了约15min，未见好转，洗掉了。又过了半小时，恢复正常。

问题：有mm遇到类似症状否？我应该放弃还是换用其他精油还是降低浓度（现在也不高，2％）？

（我之前把rosemary加到洗发水里用就没啥感觉，cedarwood在手腕试了不过敏）

下面这段是讲精油镇痛的机理，第一条就是通过麻痹神经缓解疼痛，其中有薰衣草哦，不知可解释得了

Specific
Aromatherapy Applications

Pain:
Often applied through massage oils, lotions, liniments, or compresses,
essential oils reduce pain by different mechanisms:

Numbing: Some oils - such as clove bud, frankincense chamomile, lavender,
and lemongrass - dull pain by numbing nerve endings,

Anti-inflammatory:
Oils such as chamomile, geranium, juniper, lavender, marjoram,
myrrh, rose, and tea tree diminish pain through anti-inflammatory
actions.

Heat: Some
oils – e.g., as bay laurel, bay rum, black pepper, cinnamon, clove
bud, ginger, juniper, peppermint, and thyme - relieve pain by producing
heat and increasing circulation.

Brain: Some oils -
such as frankincense, ginger, and lemongrass - interfere with the
brain’s processing of pain signals.

Neurotransmitters:
Oils such as birch (containing aspirin-like compounds), cayenne,
and ginger hinder the production of neurotransmitters that carry pain
messages from nerve endings to the central nervous system.

Relaxation: Using
chamomile, clary sage, lavender, lemon, lemon eucalyptus, lemon verbena,
marjoram, melissa (lemon balm), myrtle, and petitgrain (a citrus-related
plant) may help relieve pain through relaxation.

雪松除了对掉发, 头皮的作用以外, 还有减轻压力, 放松神经的作用.

在个体差异上, 有的人也许会有虚脱的感觉, 有的人是会有放松愉悦的感觉.

嗯，大概是雪松，下次改成只用rosemary看看。也许和这次用量比以前大也有关系？