Let me first provide some background. I'm 38 years old and work in sales. I usually have high stress and irregular sleep patterns. Over the past two years, I've clearly noticed that my performance in that area isn't what it used to be—duration is shorter, and sometimes I even struggle to stay hard midway. I've tried some oral products before, and they did work, but the side effects were obvious—dizziness, facial flushing—my wife could even tell something was off. Later, a friend recommended a topical spray, saying it had fewer side effects, so I started researching.

I chose German Black Diamond Delay Spray because the description said it was made in Germany, Hong Kong version,主打 no numbness and no side effects, with fast onset—usable in just 8 minutes. I've always had a good impression of German products, finding them rigorous and reliable, so I ordered a 15ml bottle.

When it arrived, the packaging was fairly simple—a cardboard box with a spray bottle inside. The instructions were in Traditional Chinese and English, which looked quite official. The bottle itself is black with a spray nozzle, and the overall build quality felt decent.

My first use was on a weekend evening. After showering, I sprayed once on the glans and the coronal sulcus as per the instructions, then spread it evenly with my finger. It felt slightly cool right after spraying, with no stinging or burning sensation. After waiting about 8 minutes, I felt a mild warmth in the area, though not very pronounced. Then we started. Honestly, at first I didn't notice anything special, but after a while, I realized I was lasting much longer than usual. Normally I'd finish in about 5 minutes, but this time it lasted over 20 minutes, and there was no numbness—I still had sensation, just less sensitivity. My wife was quite satisfied too, saying I seemed to be in much better form.

I've used it several more times since, and here's a summary of my experience:

Onset time: It's indeed fast. I usually spray and wait 8–10 minutes before starting, no need to prepare half an hour ahead. If I have more time and wait 15–20 minutes, the effect feels more stable.

Delay effect: Based on my own experience, it extends duration by about 20–30 minutes, though it varies from person to person. I normally last 5 minutes, but with it I can reach 20–30 minutes—a clear improvement. And it's not that kind of complete numbness where you feel nothing; it lowers sensitivity while preserving pleasure—you just don't ejaculate as easily.

Duration of effect: The effect lasts about 1–2 hours, which is more than enough. Once I sprayed twice, and it lasted over 40 minutes, but afterward it felt a bit excessive—pleasure was diminished—so it's better to stick to the recommended dosage.

Side effects: After all these uses, I haven't experienced numbness, pain, or allergic reactions. The only thing is that spraying too much causes slight warmth, but it fades quickly. There's also no dizziness or heart palpitations, which are common with oral medications.

Now let me talk about the drawbacks and inconveniences:

First, the dosage is hard to gauge. The instructions say to spray 1–4 times, but as a first-time user, you really don't know how much to use. I started with one spray, and the effect was just right. Once I tried two sprays, it lasted too long and actually became tiring. So I'd advise beginners to definitely start with one spray and gradually increase.

Second, the nozzle design is mediocre. Sometimes it doesn't spray as a mist but rather as a stream, making it easy to over-spray or spray off-target. I apply it to my finger first and then spread it, which gives better control.

Third, the price isn't exactly cheap. A 15ml bottle lasts about 20–30 uses, which comes to roughly ten-plus yuan per use. While it's cheaper than oral options, it's still an ongoing expense if used regularly.

Additionally, I've compared it with several other products, and here's a breakdown:

I've also used other brands before, like Louis 16, but I felt the effect wasn't as good as Black Diamond, and Louis 16 has a herbal medicine smell that I didn't care for. There's also Jiu Huang, which works decently but has a slow onset—needing half an hour of preparation—making it less convenient than Black Diamond.

Finally, here are my recommendations:

Suitable for:

Not suitable for:

In summary, German Black Diamond Delay Spray is a product I'd repurchase—stable effects and minimal side effects. But dosage control is key: start with one spray and find the right amount for yourself. If you're considering it, give it a try, but make sure to buy from legitimate channels to avoid counterfeits.