Why does hair seem to grow thicker after shaving, but scalp hair does not?

Oct 18, 2024 Source: Cainiu Health
Dr. Liu Wenmin
Introduction
In general, whether shaving or cutting hair, it does not affect the actual growth of hair. The perception that hair appears thicker and more abundant after shaving is an illusion; newly grown hair has a blunt tip and appears darker, creating the false impression of increased hair volume. To promote hair growth, treatments such as scalp injections, scalp care and maintenance, microneedling therapy, laser therapy for hair regrowth, and hair transplantation can be effective options.

In general, whether it's shaving or cutting hair, the actual growth of hair is not affected. The perception that hair appears "thicker" or "denser" after shaving is an illusion, because newly grown hair has a blunt tip and darker color, creating contrast against the surrounding skin and giving the false impression of increased hair volume. Haircutting does not affect the hair growth cycle, color, or texture, so no such illusion occurs. Factors such as growth mechanisms, color changes, growth rate, number of hair follicles, and hormonal influences can be observed to understand hair behavior. For those seeking thicker or fuller hair, improvements can be achieved through treatments such as scalp injections, scalp care and maintenance, microneedling therapy, laser therapy for hair growth, or hair transplantation.

Hair Thickening and Restoration Treatment Analysis:

Service Name

Scalp Injection Therapy

Scalp Care and Maintenance

Scalp Microneedling Therapy

Laser Hair Regrowth Therapy

Hair Transplantation

Description

Injecting specific medications or nutrients into the scalp to stimulate hair growth

Regular cleansing, massage, and moisturizing to improve scalp environment and promote scalp health

Creating microscopic channels on the scalp to enhance absorption of medications and nutrients

Using laser irradiation on the scalp to promote nutrient uptake by hair follicles

Quickly filling in areas with missing hair

Advantages

1. Highly targeted
2. Simple procedure

1. Improves circulation
2. Easy to perform

1. Safe and convenient
2. Enhances drug absorption

1. Improves scalp texture
2. Non-invasive

1. Boosts self-confidence
2. Customizable design

Duration of Effect

1–2 years

1–2 months

2–3 months

2–3 months

15–20 years

Potential Risks

1. Risk of infection
2. Allergic reactions

1. Scalp allergies
2. Pain or irritation

1. Risk of infection
2. Nerve damage

1. Scalp redness and swelling
2. Discomfort or pain

1. Risk of infection
2. Bleeding and swelling

Reference Price

500–800 RMB per session

80–300 RMB per session

40–200 RMB per session

3,000–8,000 RMB per session

10,000–60,000 RMB per session

When choosing a specific treatment method, individual patient conditions and needs should be comprehensively evaluated, and treatment should be conducted under the guidance of a qualified medical professional.