Numbing creams are topical medications that reduce pain and discomfort on the skin. These creams contain active ingredients, such as lidocaine or prilocaine, acting as local anesthetics. They work by temporarily blocking nerve signals in the treated area, preventing pain signals from reaching the brain. Many are available over-the-counter, while stronger formulations may require a prescription. They are frequently used before minor procedures or to soothe skin irritations.
Preparing the Skin for Application
Before applying numbing cream, prepare the skin to ensure effectiveness and prevent issues. Thoroughly wash the area with mild soap and water to remove dirt, oils, or residues. After cleansing, gently pat the skin dry with a clean towel; avoid rubbing to prevent irritation. A clean, dry surface allows optimal absorption of numbing agents.
Ensure the skin is intact and free from cuts, scrapes, open wounds, or irritation before application. Applying numbing cream to broken skin can increase the absorption of active ingredients into the bloodstream, potentially leading to adverse effects. This preparatory step helps maximize the cream’s numbing effect while minimizing risks.
Step-by-Step Application Guide
To apply numbing cream effectively, dispense a generous amount onto the prepared skin. The goal is to create a thick, visible layer, typically around 2-3 millimeters, rather than rubbing it in completely like a lotion. The cream should sit on the surface, fully covering the area where numbing is desired, possibly extending an inch beyond the treatment site. This thick application ensures active ingredients penetrate the skin adequately.
Once the cream is applied, cover the treated area with an occlusive dressing, such as plastic wrap or cling film. This covering traps heat and moisture, enhancing numbing agent absorption and preventing premature drying. Leave the plastic wrap in place until just before the procedure. After applying the cream and securing the covering, wash your hands with soap and water to remove any residual product.
Understanding Onset and Duration
Numbing cream typically becomes effective, or reaches its onset time, 30 to 60 minutes after application. Maximum numbing may be reached within 2 to 3 hours for some products. The numbing sensation generally lasts 1 to 4 hours, though some formulations provide relief for up to 6 hours after removal.
Several factors influence the numbing effect’s onset and duration. These include active ingredient concentration, applied layer thickness, the treated body area, and individual skin characteristics. For instance, thinner skin or areas with increased blood flow might experience faster onset or different durations. Following manufacturer’s instructions for application time is important for optimal results.
Safety Precautions and Considerations
Using numbing cream safely involves adhering to guidelines to prevent adverse effects. Do not exceed the recommended dosage or apply the cream to large body areas, as this increases medication absorption into the bloodstream. Over-absorption of active ingredients like lidocaine can lead to serious systemic side effects, including effects on the heart or brain. Always consult product instructions for appropriate amount and frequency of application.
Avoid applying numbing cream to broken, irritated, or infected skin, including cuts and scrapes. This prevents excessive absorption and potential irritation. While minor side effects like temporary skin whitening, mild redness, or itching are sometimes observed, more serious signs of an allergic reaction include hives, swelling of the face, lips, tongue, or throat, and difficulty breathing. If any severe reactions occur, immediately remove the cream and seek medical attention. Proper storage is important; keep numbing creams tightly capped, away from direct heat and sunlight, and out of reach of children and pets to prevent accidental ingestion or misuse.