The Japan Black Panther 4th Generation Men's Delay Spray (anti-premature ejaculation endurance spray, newly upgraded) is a relatively common topical delay product. Its principle is not complicated—through plant ingredients such as Cnidium monnieri, Sophora flavescens, and borneol, it produces a mild local anesthetic effect on the surface of the glans (reducing nerve sensitivity), raising the ejaculation threshold, thereby prolonging intercourse time. Simply put, it "makes the area less sensitive and delays the trigger."

Let's start with the ingredients. I'll break down the main components according to the product description:

The combined goal of these ingredients is to reduce glans sensitivity. Unlike oral medications, it does not enter the bloodstream but works on the epidermal layer, so the overall risk is relatively controllable.

Next is what everyone cares about most—how to use it correctly?

According to the product instructions, it is recommended to use it 20–30 minutes before intercourse. Specific steps:

1. First clean the glans and the coronal sulcus (the groove just below the glans), then dry thoroughly.
2. Shake the bottle well, hold it about 10 cm from the skin, press 1–2 times, and spray onto the glans and coronal sulcus area. Try to avoid the urethral opening (the small hole for urination), as it may cause noticeable stinging.
3. Gently spread it evenly with your fingers, ensuring the liquid covers the entire area that needs delay, then wait about 60 seconds for it to be mostly absorbed.
4. For first-time use, it is strongly recommended to start with just 1 spray. Many people think "more spray means better results"—this is a misconception. Over-spraying can numb the area to the point of losing sensation, which can actually affect erection and pleasure. After 2–3 uses, once you understand your own response, you can adjust to 2 sprays as needed.

Regarding onset time, the instructions state "temporary use takes effect in 30 minutes, with optimal effect reached after 60 minutes." So don't rush to start right after spraying—give the medication time to absorb. Additionally, if you want to wash it off 5 minutes after spraying, that's fine and won't affect the efficacy—because the active ingredients have already penetrated.

Let's discuss a few more practical details that customers often ask me about at the pharmacy:

Now for the safety warnings—this part must be read carefully.

Who should not use it?

What are the possible side effects?

When should you go to the hospital?

Finally, if you're still deciding which product to choose, or want to learn about other types of delay products, you can refer to my earlier article Endurance Spray Comparison Guide, which includes detailed comparisons of different products. Additionally, beginners often fall into pitfalls when choosing delay sprays—this Pitfall Avoidance Guide is also worth reading.

The Japan Black Panther 4th Generation is a relatively mature product with established market feedback, but any delay spray is only an auxiliary tool and cannot replace healthy lifestyle habits. If you have long-term premature ejaculation issues, it's recommended to visit a正规 hospital's urology or andrology department to rule out organic problems such as prostatitis or hormonal abnormalities.

One final reminder: topical delay sprays are adult products, not medications, and results vary from person to person. Read the instructions carefully before use, and consult a professional physician or pharmacist if you have any questions.