What it is
Dryness of the penis refers to when the glans of the penis does not have lubrication and therefore has a dry appearance. However, in these cases it is also possible that the foreskin, which is the skin covering the glans, may become dry and have small cracks.
While in most cases this is not very significant, being only a sign of a temporary allergic reaction, for example, in other cases it can be a sign of a more serious problem such as an infection or a chronic skin problem.
So if the hangover is a constant discomfort, or if it takes more than 1 week to improve, it is recommended to see a family doctor or urologist to identify the cause and start the most appropriate treatment, which may involve the use of ointments, antifungals, or just taking some daily care.
How to Treat
For the treatment of dry and wrinkled penis you should make use of male intimate soaps that restore/normalize the pH level of the penis.

Allergy on the penis
The presence of an allergic reaction in the penis is relatively common as it can have several causes. Some of the most common include the use of synthetic and very tight underwear, use of intimate products with chemicals, such as parabens or glycerin, as well as the use of latex condoms.
In these cases, besides the dryness of the penis, other signs may also appear, such as redness, swelling, or itching, for example. See what other causes can cause itching in the penis.
What to do: It is important to try to identify what is causing the allergy in order to avoid contact with the fabric or substance. In addition, you should consult a dermatologist or urologist, who may recommend personal hygiene products that do not have many chemicals or even condoms made from materials other than latex to avoid the skin allergy.
Use of some soaps
The use of soaps in the intimate area can cause the skin to dry out, because this is a very sensitive area that is easily attacked by the chemicals present in many soaps. When this happens, a slight inflammation of the skin appears, which, although it is not visible to the naked eye, can cause the glans and even the foreskin to dry out.
What to do: Many times intimate hygiene can be done with just the use of water, however, if you need to use soap, it is advisable to use a soap that is proper for the intimate region or that is suitable for sensitive skin.
Use of tight clothing
The use of tight clothes, as well as synthetic materials, can cause increased humidity in the genital region, which favors the growth of fungus and, consequently, dryness in the penis and other symptoms such as redness and even itching in the region.
What to do: It is recommended to wear cotton underwear to avoid excessive humidity, in addition to opting for looser fitting clothes or less tight pants that allow air to pass through and ventilate the genital region.
Prolonged sexual activity
Very prolonged sexual activity, whether by masturbation or sexual intercourse, can cause the natural lubricant produced by the penis to be insufficient and, in these cases, dryness can occur. Even if it is not very prolonged, very frequent sexual activity can also result in the same problem.
What to do: The ideal is to use a lubricant during this type of sexual activity, especially if a condom is not being used. The best options are water-based lubricants, as they are less likely to cause allergies and have fewer chemicals that can damage the skin.
Penile Infection
Infections in the penis usually occur due to bacterial or fungal overgrowth and can be caused by poor hygiene in the area, but can also arise after a local allergy or by the transmission of a sexual disease, such as chlamydia or gonorrhea, for example.
As in allergies, the infection is almost always accompanied by other symptoms such as redness, swelling, itching, scaling, pain when urinating and even pus coming out of the urethra.
What to do: whenever an infection is suspected, especially due to pain when urinating or pus, it is very important to see a family doctor or urologist to identify the type of infection and start the most appropriate treatment, which may include the use of antibiotics or antifungals, both in ointment and pill form.
Balanitis
Balanitis is an inflammation of the head of the penis that causes symptoms such as redness, itching, swelling, and dryness of the penis. In most cases, balanitis is caused by an infection with the fungus Candida albicans, and is not considered a sexually transmitted infection. Besides, balanitis can also occur in boys, and is more frequent in those who have not been circumcised, because it is easier to accumulate secretions, humidity, and bacteria on the foreskin.
What to do: Some measures should be adopted, such as adequate cleaning of the penis and the use of cotton underwear. Also, in case of infection, the urologist may recommend the use of antifungal ointments, antibiotics or corticoids, for example.
Skin problem
Although it is rarer, some skin problems can also be the source of dryness in the penis. Some of the most common dermatological problems that can present this symptom include eczema or psoriasis, for example. However, it is common for these diseases to affect other places on the skin and, therefore, they are more easily identifiable when they appear elsewhere.
Generally, these situations are more common in men with sensitive skin, with allergies, or who have a family history of skin problems. See what the most common symptoms of psoriasis or eczema are.
What to do: If a skin problem is suspected, you should consult a dermatologist or urologist to start the most appropriate treatment.