I am 37 years old and work as a fitness coach at a gym. Over the past two years, with more overtime and less sleep, I feel my stamina has noticeably declined compared to before. A friend on my social feed shared their experience with topical endurance sprays, so I searched for "Louis 16 endurance spray male delay spray prolong intercourse time adult novelty products." The price was moderate, so I bought a 10ml bottle to try.

The first time I used it was on a weekend evening, two hours after dinner on an empty stomach. Following the instructions, I sprayed it on the glans groove and base, and put on underwear about five seconds later. After roughly 15 minutes, I started to feel the effects. My erection was firmer than usual, and the duration lasted about 22 minutes, a clear improvement from my usual 10-plus minutes. The second time was after eating hotpot; I waited nearly 40 minutes for it to take effect, and it lasted about 25 minutes.

For the third try, I used it before a workout. The onset time shortened to 12 minutes, and the duration approached 30 minutes. Overall, Louis 16 endurance spray is a type of topical endurance liquid. Its principle is to slightly reduce sensitivity through plant-based ingredients to prolong time, rather than acting as a strong anesthetic.

I've researched endurance products on the market, which generally fall into three categories: sprays, pills, and creams. Sprays work the fastest, pills require digestion and absorption, and creams tend to be stickier. The ingredients of Louis 16 endurance spray are mainly natural plant extracts with no obvious Western medicinal components, so the side effects are relatively mild.

The usage is simple: each bottle can be sprayed about 40 times. The key is not to spray too much; start with a small amount for testing. Precautions include: those with skin damage or a history of allergies should test it on the inner arm first; people with high blood pressure or those on medication should consult a doctor beforehand; and it should be washed off before intimate contact.

Now for the drawbacks. First, on an empty stomach, I felt slight stomach discomfort. The second time, I sprayed it an hour after a meal, and that improved. Second, the price: a bottle costs over 300 yuan, which works out to over 30 yuan per use. Using it long-term can still be a bit painful on the wallet.

Comparing it with other products:

| Product | Onset Time | Duration | Side Effects | Price |
| German Black Diamond Endurance Liquid Male Anti-Premature Ejaculation Delay Spray Numbing-Free No Side Effects Hong Kong Version | 10-15 minutes | 25-35 minutes | Slight warmth | Moderate |
| Japanese 2H2D Black Edition Endurance Liquid Spray Anti-Premature Ejaculation Delay and Erection Aid Recommended by Watsons Free Platinum Travel Set | 15-25 minutes | 20-30 minutes | Almost none | Higher |
| German Imported EROS Ilus 101 Male Endurance Liquid Super Strong Delay Authentic Anti-Counterfeit Traceable | Over 20 minutes | Over 30 minutes | Occasional stinging | Low |

Louis 16 endurance spray falls in the middle in terms of onset speed, has fewer side effects than EROS, but is priced slightly higher than Black Diamond.

I've compiled a few common questions: How long after use can I shower? Wait at least 30 minutes to avoid washing off the ingredients. Can it be used consecutively? It's best to use it every other day; using it for more than three days in a row may lead to tolerance. Does it affect the female partner? The instructions say it can enhance pleasure, but my wife only mentioned an improved sensation of lubrication, nothing else specific.

German Black Diamond Endurance Liquid Male Anti-Premature Ejaculation Delay Spray Numbing-Free No Side Effects Hong Kong Version My friend has used it, and it works a bit faster than Louis 16, but the duration is similar.

Another alternative is Japanese 2H2D Black Edition Endurance Liquid Spray Anti-Premature Ejaculation Delay and Erection Aid Recommended by Watsons Free Platinum Travel Set, which has ingredients more focused on aiding erections and is also pricier.

German Imported EROS Ilus 101 Male Endurance Liquid Super Strong Delay Authentic Anti-Counterfeit Traceable is a choice for those on a budget, but it has a slower onset.

Looking at Using German Black Diamond Endurance Liquid for Two Weeks - My Real Delay Experience - mph3zm040, their experience is similar to mine, with minimal side effects being a common point.

Using British Gold Spray for Two Months - My Real Delay Experience - mpijjyhn1 mentions that long-term use can lead to dependence. I also felt a bit of tolerance after my third use.

In summary, Louis 16 endurance spray is suitable for men aged 30-50 who occasionally want to improve their duration, especially those who work out or are under stress but are generally healthy. It is not suitable for those with sensitive skin, those seeking the lowest price, or those who wish to use it daily. It's recommended to buy a small bottle for testing first, and adjusting your daily routine can enhance the effects.