Let me start with my own situation. I'm 35 this year, working in sales. I usually face a lot of pressure and have irregular sleep patterns. Over the past two years, I've clearly felt a decline in that area. It's not that I'm completely incapable, but the duration is short—sometimes it's over in two or three minutes. My wife doesn't say anything, but I know she's not fully satisfied. After reading many posts, I decided to try an external endurance spray, and finally chose the Black Panther II male endurance spray, mainly because it's imported from Japan, made with a pure plant formula, and has decent reviews.

I bought the 10ml version. The packaging is quite simple—a paper box containing one spray bottle and an instruction manual. The spray is a clear liquid with a slight herbal scent, not pungent. The manual states the main ingredients are Cnidium fruit, Sophora flavescens, borneol, and such—all common herbs.

The first time I used it was on a weekend evening. After showering, I sprayed once on the glans and the coronal sulcus about 30 minutes before intercourse, as per the instructions, and gently spread it with my finger. It felt a bit cool right after spraying, and the sensation faded within a minute or two. About 20-plus minutes later, my wife came out of the shower, and we started getting intimate. Honestly, I was a bit nervous at first, worried it wouldn't work, but it actually felt fine. I could control myself noticeably better than usual, and it lasted about 20-plus minutes before finishing—much longer than before. There was no particularly numb feeling throughout; it just reduced sensitivity a bit, but the pleasure was still there, and I ejaculated normally in the end.

I used it several more times afterward and gradually figured out some patterns. The onset time depends on the amount sprayed and my personal state. I usually spray 30-40 minutes in advance, and the effect is fairly stable. If used on short notice, the manual says it takes effect in 30 minutes and reaches its best effect at 60 minutes. I've tried spraying 15 minutes ahead, and it still worked, but the effect wasn't as strong. As for duration, I can extend it to about 20-30 minutes, depending on my condition at the time.

In terms of side effects, the main one I encountered was mild numbness, especially when I sprayed too much. Once, I got greedy and sprayed twice, and my glans felt a bit wooden, with significantly reduced sensation. Although it lasted longer, the pleasure was also diminished. The manual says not to spray too much, and I learned that from personal experience. Also, it feels a bit cool right after spraying, but that goes away after a while. No other discomfort, and it didn't affect my erections.

I also noticed that if I washed it off 5 minutes after spraying, the effect was weaker. The manual says it can be washed off, but it's best to wait 30 minutes for absorption. I tried washing it off 10 minutes after spraying once, and the effect was indeed weaker, so it's better to follow the manual.

Later, I also tried a few other sprays. Here's a brief comparison:

The advantage of Black Panther II is that its plant formula is relatively gentle, the effect is stable, and it suits most people. The downside is that it doesn't kick in the fastest—you need to spray 30 minutes ahead.

If you're also using this type of product for the first time, I'd suggest starting with a small bottle, spraying just once, and not overdoing it. Also, if you have high blood pressure or heart issues, it's best to consult a doctor first. Those with erectile dysfunction shouldn't rely on this—it only delays, it doesn't help with erections.

Overall, the Black Panther II male endurance spray has been effective for me. It solved my embarrassment and improved the quality of our marital life. It has some minor flaws, but the pros outweigh the cons, and I'll keep using it. If you're dealing with a similar issue, give it a try.

Related reading: How to Choose an External Endurance Spray: A Hands-On Comparison of Four Popular Sprays, How to Choose an External Endurance Spray: A Comparison Review of 5 Popular Delay Sprays.

Also, the Japan Black Panther Endurance Liquid 4th Generation and the 3rd Generation Upgraded Version have come out. They're said to work even better—I haven't tried them, but they shouldn't be much worse.