What are the benefits and drawbacks of using a Cassia seed pillow?
Generally speaking, the benefits of a cassia seed pillow include coolness and comfort, clearing the liver and improving vision, promoting blood circulation, improving sleep quality, and preventing cervical spine diseases. The drawbacks include allergic reactions, cold invasion, excessive hardness affecting comfort, high mobility affecting sleep, and bacterial growth and insect infestation.

I. Benefits
1. Cool and comfortable: Cassia seeds have good breathability, with gaps between the granules allowing free air circulation. During sleep, heat can be dissipated through these gaps, creating a cool sensation for the head.
2. Clears the liver and improves vision: Cassia seeds have medicinal properties that clear the liver and improve vision. When used as a pillow, their therapeutic effects may be absorbed through the skin, helping to relieve eye fatigue and protect vision.
3. Promotes blood circulation: Cassia seed pillows can stimulate acupoints on the head and neck, helping to promote qi and blood circulation, improve blood circulation, and relieve symptoms such as headaches and dizziness.
4. Improves sleep quality: The hard cassia seeds can massage the acupoints on the head and neck during sleep, helping to alleviate insomnia and improve sleep quality.
5. Prevents cervical spine diseases: The shape of cassia seed pillows is usually designed to provide good cervical support, helping to prevent and relieve mild cervical problems.
II. Drawbacks
1. Allergic reactions: If the cassia seed pillow is not thoroughly cleaned during manufacturing and contains many impurities, it may irritate tissues in the respiratory tract and eyes, causing allergic symptoms such as skin itching, rashes, and rhinitis.
2. Cold invasion: Cassia seeds are inherently cold in nature, and long-term use may cause cold invasion to the head, leading to poor blood circulation and health risks such as headaches and head congestion.
3. Excessive hardness affecting comfort: The granules of cassia seeds are relatively hard, and an overly hard pillow may cause uneven pressure distribution on the head and neck, failing to conform well to the natural curve of the neck during sleep and easily causing neck muscle tension and soreness.
4. High mobility affecting sleep: The mobility of cassia seeds inside the pillow is relatively strong. During sleep, as the head moves, the seeds shift continuously, causing instability in the shape and height of the pillow, thus affecting sleep continuity and quality.
5. Bacterial growth and insect infestation: As plant seeds, cassia seeds are prone to dampness, bacterial growth, and mold if the pillow manufacturing process is inadequate or the pillow is used for an extended period in a humid environment.
It is recommended to place the cassia seed pillow in a well-ventilated area regularly for drying, keeping it dry to prevent dampness, mold, and insect infestation, thus preserving the effectiveness of the cassia seed pillow.