The ability of topical ointments or creams to regrow hair depends on the underlying cause of hair loss and the specific product being used. While some topical treatments have been shown to be effective for certain types of hair loss, they may not work for everyone, and results can vary.

Here are some key points to consider:

1. Minoxidil: Minoxidil is an over-the-counter topical medication that has been FDA-approved for the treatment of androgenetic alopecia, also known as male and female pattern baldness. It is available in both liquid and foam formulations. Minoxidil can stimulate hair growth in some individuals, typically by prolonging the growth phase of the hair follicles. However, it may not work for everyone, and it must be used continuously to maintain results. If you stop using minoxidil, any new hair growth may be lost.

2. Prescription Medications: Finasteride is an oral medication that has been FDA-approved for the treatment of androgenetic alopecia in men. It works by inhibiting the hormone responsible for hair loss. Some topical formulations of finasteride are also available and may be prescribed by a healthcare provider.

3. Other Topical Treatments: Some other topical treatments, such as corticosteroid creams and certain shampoos containing active ingredients like ketoconazole or saw palmetto, may be recommended for specific types of hair loss, such as alopecia areata or scalp conditions. These treatments aim to reduce inflammation or address underlying causes of hair loss.

4. Platelet-Rich Plasma (PRP) Therapy: PRP is a treatment in which a patient's own blood is processed to concentrate the platelets, which are then injected into the scalp or applied topically. Some studies suggest that PRP may help promote hair growth by stimulating the hair follicles.

5. Hair Growth Serums and Topical Products: There are numerous over-the-counter hair growth serums and topical products that claim to stimulate hair growth. The effectiveness of these products can vary widely, and not all of them have rigorous scientific evidence to support their claims.

It's essential to consult with a healthcare provider or dermatologist if you are experiencing hair loss. They can help determine the underlying cause of your hair loss and recommend appropriate treatment options, which may include topical treatments, oral medications, lifestyle changes, or other interventions. The success of any treatment may vary from person to person, and results may take time to become noticeable, so it's important to have realistic expectations and follow your healthcare provider's guidance.