How to Choose a Delay Spray? A Comprehensive Comparison of Marusen and Three Popular Delay Sprays

Topical delay sprays are a common entry-level choice for many men looking to improve endurance, but with so many brands and confusing marketing claims on the market, choosing the wrong one can not only be ineffective but may also cause numbness or allergic reactions. This time, we've selected three highly discussed products—Japanese Marusen Delay Spray, German Black Diamond Delay Spray, and German EROS Ilus 101—along with the previously reviewed Green Knight Gold Edition as a reference. We'll break down the differences across five dimensions: ingredients, onset time, duration, side effects, and price.

1. Look at Ingredients First—Understand the Principle to Avoid Pitfalls

The principle behind topical delay sprays is largely the same: they delay the ejaculation reflex through local anesthesia or desensitization. The difference lies in the ingredients used and their concentrations.

Japanese Marusen Delay Spray features a mild botanical formula, containing extracts such as Cnidium monnieri and clove. These ingredients take effect slowly but cause minimal irritation, making them suitable for those with sensitive skin or first-time users.

German Black Diamond Delay Spray (Hong Kong version) contains ethanol and tocopherol. Ethanol penetrates quickly, but poor concentration control can easily cause burns, which is why it emphasizes "first-time users must not spray too much; 1-4 sprays is the maximum."

German EROS Ilus 101 takes a more conventional approach, with a formula primarily based on botanical extracts. It claims to be "numbing-free," and in practice, it is indeed gentler than Black Diamond, though its onset time is slightly longer.

The Green Knight Gold Edition falls into another category, focusing on a dual-action "delay + erection support" formula. It includes erection-enhancing ingredients, making it suitable for those who also struggle with hardness, but it comes at a higher price.

2. Core Parameter Comparison

| Product | Onset Time | Duration | Numbness | Cost per Use | Suitable For |
|---------|------------|----------|----------|--------------|--------------|
| Japanese Marusen | 15-25 min | 30-60 min | Mild | Approx. 15-25 RMB | Beginners, sensitive skin |
| German Black Diamond | 5-10 min | 30-45 min | Noticeable (requires dosage control) | Approx. 10-20 RMB | Those seeking fast onset |
| German EROS Ilus | 20-30 min | 40-70 min | Mild | Approx. 20-30 RMB | Those seeking long-lasting, gentle effect |
| Green Knight Gold Edition (Reference) | 15-20 min | 45-90 min | Moderate | Approx. 30-40 RMB | Those needing erection support |

Data represents ranges and varies greatly between individuals; for reference only.

3. Detailed Pros and Cons of Each Product

Japanese Marusen Delay Spray: Beginner-Friendly, But Don't Expect a "Heavy Hitter"

Pros:

Cons:

Best for: First-time users, those with sensitive skin, and those who want to avoid strong numbness.

German Black Diamond Delay Spray: Fast, Precise, and Potent—But Misuse Can Backfire

Pros:

Cons:

Best for: Experienced users who prioritize fast onset and can accept some numbness.

German EROS Ilus 101: The Balanced Choice, But Lacks a Standout Feature

Pros:

Cons:

Best for: Those who want a gentle, long-lasting effect, don't mind waiting, and have a sufficient budget.

Green Knight Gold Edition (Supplementary Reference)

This product was mentioned in a previous review. It focuses on dual-action effects and suits those who have insufficient hardness and also need delay. However, it has the highest price, and the erection-enhancing ingredients may cause side effects such as heart palpitations. Those with cardiovascular conditions should use with caution.

4. Recommendations by Scenario—Don't Ask "Which Is the Best"

5. Pitfall Avoidance Guide: These Details Determine Success or Failure

1. Don't just trust "numbing-free" claims: Any delay spray contains anesthetic ingredients; it's just a matter of concentration. Always start with the smallest dose, such as 1 spray, and observe the reaction.
2. Test in advance: Before actual use, spray a small amount on the back of your hand or inner thigh and wait 10 minutes to check for any allergic reaction.
3. Spray in the right place: Apply to the glans and coronal sulcus, avoiding the urethral opening to prevent stinging.
4. Control frequency: Do not use more than 2-3 times per week. Frequent high-frequency use may reduce sensitivity and actually affect erections.
5. Don't mix products: Do not use two sprays simultaneously, and avoid applying lubricant immediately after spraying, as it may affect efficacy.

6. Summary

None of the three products is absolutely better or worse—it all comes down to suitability. Japanese Marusen is for beginners seeking stability, German Black Diamond is for experienced users chasing speed, and EROS Ilus is for those wanting a gentle, long-lasting effect. If you're still unsure, starting with Japanese Marusen is a safe bet, given its gentle, non-irritating nature.

Additionally, delay sprays are only an auxiliary tool. If premature ejaculation persists, it's advisable to visit a urology department at a reputable hospital rather than relying on home remedies.

Related reading: Green Knight Gold Edition Delay Spray vs. Other Delay Products: A Comprehensive Review, Japanese Black Panther 4th Gen Delay Spray: Full Ingredient and Usage Analysis