Ácido salicílico
Occlusal
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 2 Jun 2024
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Salicylic acid preparations are usually applied once each day, but read the manufacturer's printed information leaflet from inside the pack for full details.
Do not apply salicylic acid to raw or inflamed areas of skin, and do not apply it to large areas of skin.
De un vistazo
Salicylic acid treats thickened, hard skin conditions like warts, psoriasis, and some nail infections.
It works by softening the outer layer of skin.
It is applied directly to the affected skin area.
Do not apply salicylic acid to healthy areas of skin or your face.
Stop using it and get advice from a doctor or pharmacist if irritation is severe or your skin becomes very red and itchy.
About salicylic acid
Tipo de medicamento | Keratolytic |
Usado para | Warts and calluses; scaly skin conditions such as psoriasis; fungal nail infections |
También llamado | Occlusal®; |
Disponible como | Ointment, gel, paint, paste, medicated plasters, topical liquid, scalp application and shampoo |
Salicylic acid is used for a number of different skin conditions caused by thickened, hard skin, such as warts, psoriasis, scaly skin conditions and some infecciones de uñas. It is a keratolytic, which means that it works by softening the outer layer of your skin allowing it to loosen and shed.
Salicylic acid is applied directly to the area of skin affected. There are a number of different formulations and strengths of salicylic acid available which can be purchased at pharmacies, or alternatively, it can be prescribed for you by your doctor. Which preparation is suitable for you will depend upon the type of skin condition you have, and the area of your body which is affected.
Some preparations of salicylic acid also contain other ingredients such as lactic acid, coal tar, dithranol, zinc, or sulfur.
Before using salicylic acid
To make sure this is the right treatment for you, before you start using salicylic acid it is important that your doctor or pharmacist knows:
If you have diabetes, or poor circulation.
Si estás embarazada o amamantando.
Si alguna vez has tenido una reacción alérgica a un medicamento.
How to use salicylic acid
Before you start the treatment, read the manufacturer's printed information leaflet from inside your pack. It will give you more information about the brand of salicylic acid you have been supplied with and how to use it.
Use salicylic acid exactly as your doctor or pharmacist has recommended. It is usual to apply most preparations once each day.
If you are using it to remove warts or verrucas, rub off the dead tissue from the top of the wart once a week. You can do this with an emery board, pumice stone or something similar. It may take two weeks or more before you notice any improvement and it can take up to three months of daily applications for warts to go completely.
Obteniendo el máximo de tu tratamiento
Try not to get salicylic acid on healthy areas of skin and do not apply it to skin which is raw or inflamed. You can protect the nearby skin by putting some Vaseline® on the normal skin beforehand or, alternatively, if you are using it as a wart treatment, you can use a plaster with a hole in it which just exposes the wart.
If you are using salicylic acid for a nail infection, do not use nail varnish or artificial nails at the same time.
If you are using a topical liquid or a paint, these may be flammable, so do not apply either of them near flames or an open fire.
You should not apply salicylic acid to your face because of the risk of skin irritation which may cause scarring.
Can salicylic acid cause problems?
Salicylic acid can cause skin irritation, dryness, or soreness. If this happens, stop the treatment for a few days to allow your skin to recover and then re-start treatment. If the irritation is severe, or if your skin becomes very red and itchy, these may be signs of an allergy - stop using salicylic acid and ask your doctor or pharmacist for advice.
If you experience any other symptoms which you think may be due to salicylic acid, discuss them with your doctor or pharmacist for further advice.
How to store salicylic acid
Mantenga todos los medicamentos fuera del alcance y la vista de los niños.
Almacenar en un lugar fresco y seco, lejos del calor y la luz directos.
Información importante sobre todos los medicamentos
Información importante sobre todos los medicamentos
Asegúrese de que la persona que le suministra este medicamento esté al tanto de cualquier otro medicamento que esté utilizando. Esto incluye los medicamentos que compra y los medicamentos herbales y homeopáticos.
If you suspect that someone has accidentally swallowed some of this medicine, go to the accident and emergency department of your local hospital. Take the container with you, even if it is empty.
Este medicamento es para ti. No lo des a otras personas, incluso si su condición parece ser la misma que la tuya.
Si compra algún medicamento, siempre consulte con un farmacéutico para asegurarse de que sean seguros de usar con sus otros medicamentos.
No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, que se encargará de desecharlos por ti.
Si tienes alguna pregunta sobre este medicamento, consulta a tu farmacéutico.
Informar efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede reportarlos en línea a través de Sitio web de Yellow Card.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Preguntas frecuentes
Can I use salicylic acid for treating athlete's foot or other skin infections not explicitly mentioned?
Salicylic acid is primarily used for conditions caused by thickened, hard skin such as warts, calluses, psoriasis, and some nail infections. The article does not mention its use for other skin infections like athlete's foot.
Are there different strengths of salicylic acid available and how do I know which one to use?
Yes, there are various strengths and formulations of salicylic acid available. The suitable preparation for you depends on the type of skin condition you have and the affected area of your body. These can be bought at pharmacies or prescribed by your doctor.
Can salicylic acid interact with any other medications I am currently using?
The article advises to inform your doctor or pharmacist about any other medicines you are using, including those you buy, and herbal or homeopathic medicines. This is to ensure that salicylic acid is a suitable treatment and to check for potential interactions.
Is it safe to use salicylic acid if I have sensitive skin?
Salicylic acid can cause skin irritation, dryness, or soreness. If you experience this, it's recommended to stop the treatment for a few days to allow your skin to recover before re-starting. If the irritation is severe, or accompanied by redness and itchiness, it could indicate an allergy, and you should seek advice from your doctor or pharmacist.
Can I apply makeup or other skincare products over an area treated with salicylic acid?
The article does not specifically address applying makeup or other skincare products over treated areas. However, it does advise against using nail varnish or artificial nails if you are using salicylic acid for a nail infection.
What should I do if I accidentally get salicylic acid in my eyes or mouth?
The article states that if someone has accidentally swallowed some of the medicine, you should go to the accident and emergency department of your local hospital. It does not specifically detail what to do if it gets into the eyes but advises to protect healthy skin and not to apply it to the face.
Lecturas adicionales y referencias
- Manufacturer's PIL, Salatac® Gel; Dermal Laboratories Ltd, The electronic Medicines Compendium. Dated May 2024.
- Manufacturer's PIL, Occlusal® 26%w/w cutaneous solution; Alliance Pharmaceuticals, The electronic Medicines Compendium. Dated March 2015.
- Medicamentos Completos BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
Sobre el autorVer biografía completa

Michael Stewart, MRPharmS
Gerente de Revisión de Folletos de Medicamentos – Contratista, Farmacéutico
BPharm (Hons), MRPharmS
Michael es un farmacéutico comunitario que ejerce en Midlands y South Yorkshire con más de 20 años de experiencia asesorando sobre medicamentos y condiciones médicas. Tiene una sólida formación en capacitación en atención médica, habiendo producido e impartido cursos de formación para equipos de farmacia y personal de entornos de atención residencial, incluidas enfermeras. También ha contribuido a juntas asesoras de farmacia para la gestión de condiciones de baja gravedad en la comunidad.
Acerca del revisor

Sid Dajani
Sultan Dajani se graduó en la Escuela de Farmacia de Londres en 1994 y se convirtió en el miembro más joven elegido para el consejo de la Sociedad Real de Farmacia desde su fundación en 1842.
Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Artículo también disponible en Inglés, Alemán, Español, Francés, Italiano, Portugués, Hindi, Hebreo, Árabe, y Sueco.
Próxima revisión: 15 de mayo de 2027
2 Jun 2024 | Última versión

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