* Psoriasis: It can help slow down the rapid growth of skin cells that causes psoriasis plaques.
* Seborrheic dermatitis: It can reduce inflammation and scaling associated with dandruff and seborrheic dermatitis.
* Eczema: It can help relieve itching and inflammation on the scalp.
* Itching scalp: It can soothe and calm an itchy scalp, regardless of the underlying cause.
Here's how tar shampoo works and its potential effects on hair:
How it Works:
* Reduces inflammation: Coal tar has anti-inflammatory properties that can calm irritated skin.
* Slows skin cell growth: It can slow down the excessive production of skin cells, which is a key factor in conditions like psoriasis.
* Anti-itch: It helps relieve itching, which can prevent further irritation and damage to the scalp.
* Antifungal: It has mild antifungal properties which can help in cases of seborrheic dermatitis.
Effects on Hair:
* Can dry out hair: Tar shampoo can be drying, especially with frequent use. It can strip the hair of its natural oils, making it feel rough, brittle, or dull.
* May alter hair color: It can potentially stain or discolor light-colored or chemically treated hair (bleached, dyed, permed).
* Can leave a residue: Some tar shampoos can leave a slightly sticky or tarry residue on the hair, which can be difficult to rinse out completely.
* May make hair feel "dirty": Because of the potential residue, hair might feel like it needs to be washed more often.
* Potential benefits: By treating the scalp condition, tar shampoo can indirectly improve hair health by creating a healthier environment for hair growth. If scalp issues are causing hair loss, treating them with tar shampoo could potentially improve hair density over time.
Important Considerations:
* Concentration of Tar: The strength of tar shampoo varies. Follow the instructions on the product label and your doctor's recommendations.
* Frequency of Use: It's generally recommended to use tar shampoo only a few times a week, or as directed by a doctor. Overuse can worsen dryness and irritation.
* Follow with Conditioner: Always use a moisturizing conditioner after using tar shampoo to help restore moisture to the hair.
* Sun Sensitivity: Tar can make the skin more sensitive to the sun. Protect your scalp and skin from sun exposure after using tar shampoo.
* Smell: Tar shampoo has a distinctive odor that some people find unpleasant. The smell usually fades after rinsing.
* Pregnancy/Breastfeeding: Consult with a doctor before using tar shampoo if you are pregnant or breastfeeding.
* Allergic Reactions: Some people may be allergic to coal tar. If you experience any signs of an allergic reaction (rash, itching, swelling), discontinue use and seek medical attention.
* Long-Term Use: Talk to your doctor about the long-term use of tar shampoo, as prolonged exposure to coal tar may have potential risks.
In Summary: Tar shampoo is a useful treatment for various scalp conditions, but it can also have some negative effects on hair. It's important to use it as directed, follow up with moisturizing conditioners, and be aware of potential side effects. If you have concerns about using tar shampoo, consult with a dermatologist or doctor.