Neutrogena T/Gel Therapeutic (Coal Tar)

• Neutrogena T/Gel Therapeutic, a coal‑tar‑based shampoo, is used to manage inflammatory scalp disorders such as psoriasis, seborrheic dermatitis and dandruff. The formulation combines coal tar with cleansing agents to deliver both therapeutic and cosmetic benefits, making it suitable for regular use under medical supervision.
• Psoriasis: reduces scaling, erythema and itching on the scalp by slowing keratinocyte proliferation and decreasing inflammation.
• Seborrheic dermatitis: alleviates redness, flaking and oiliness, helping to restore a healthier scalp environment.
• Dandruff: controls excess shedding and scalp itch, providing longer‑lasting relief compared with standard anti‑dandruff agents.

• Coal tar exerts anti‑inflammatory, antiproliferative and keratolytic actions on the skin. It interferes with DNA synthesis and reduces the hyperproliferation of keratinocytes, while modulating cytokine release and inflammatory pathways, leading to decreased scaling and erythema on the scalp.

Neutrogena T/Gel Therapeutic may cause a range of skin reactions, which are categorised by frequency and severity.

Common Side Effects

• Scalp irritation or mild burning sensation.
• Dryness of the scalp and hair.
• Itching or pruritus.
• Redness or mild erythema.
• Temporary hair discoloration or darkening.
• Unpleasant odor during and after use.
• Flaking or mild dandruff increase.
• Tingling sensation after application.

Serious or Rare Side Effects

• Allergic contact dermatitis with severe rash.
• Significant hair loss or alopecia.
• Pigment changes on the scalp or hair.
• Severe photosensitivity reactions.
• Persistent swelling or blistering of the scalp.

When using Neutrogena T/Gel Therapeutic, several precautions should be observed to minimise irritation and ensure safe handling.

• Avoid application on broken or inflamed skin: may increase discomfort.
• Limit exposure to sunlight after use: coal tar can increase photosensitivity.
• Do not combine with other topical irritants (e.g., retinoids, strong acids): risk of excessive irritation.
• Keep away from eyes and mucous membranes: avoid accidental contact.
• Discontinue use and seek medical advice if severe redness or rash develops.
• Store at room temperature: keep in original container, protect from moisture and direct sunlight.

Coal tar can interact with certain topical and systemic agents, affecting tolerability or therapeutic outcome.

Major Interactions (Avoid)

• Concurrent use with topical retinoids: may cause severe irritation.
• Combination with UV light therapy: heightened photosensitivity risk.
• Use together with other keratolytic agents (e.g., salicylic acid): excessive skin dryness.

Moderate Interactions (Monitor Closely)

• Simultaneous use of multiple medicated shampoos: potential additive irritation.
• Application with hair dyes or bleaching agents: possible staining or reduced efficacy.
• Systemic antihistamines: may mask early signs of allergic reaction.