Tarkov Chemical Part 4 Best Choice: Who To Give / Turn Into

Last Updated on January 7, 2026 by Samuel Franklin

Chemical Part 4 (or Out of Curiosity and Big Customer) is an early Tarkov quest with different rewards that make it difficult to determine the best choice for who to give the marked chemical transport vehicle information.

I recommend Therapist when completing this quest based on the gameplay value of the injector case although Skier may be a viable alternative for new or Standard Edition players. These factors include your Tarkov experience level, game edition and personal preferences that are detailed below with the rewards, reputation impacts and overall quest value to make your who to turn into decision.

Table of Contents:
– Chemical Part 4 Rewards
– Chemical Part 4 Best Choice

Chemical Part 4 Rewards

After completing Chemical Part 3 players will unlock three quests that are each asking for information on a chemical transport vehicle located on Customs; Chemical Part 4 (Skier), Out of Curiosity (Therapist) and Big Customer (Prapor). By marking this location with a MS2000 Markers and extracting from a Customs raid players can select who to give this information with each having different rewards and consequences.

After selecting one trader the other quests will automatically be failed and players will receive quests to regain the full trader reputation lost (0.25) for the two traders that you did not select known as Loyalty Buyout (Skier), Trust Regain (Therapist) and No Offence (Prapor). The outcomes for each option are:

The quests to regain reputation are:

• Loyalty Buyout (Skier) requires 1 million Roubles for 0.25 Skier reputation.
• Trust Regain (Therapist) requires 4 common keys (Dorm Room 303, ZB-014, Military Checkpoint Key and Gas Station Storage Room) for 0.25 Therapist reputation.
• No Offence (Prapor) requires 10 M67 grenades for 0.25 Prapor reputation.

Chemical Part 4 Best Choice

I recommend most players select Therapist when completing Chemical part 4 for the injector case that helps combat, survival and money making for the experienced Tarkov player. Newer players to Tarkov and in particular Standard Edition players may prefer Skier though as this limits his reputation loss which is hard to acquire and expensive to regain. Prapor can also be tempting at first glance for Standard Edition players due to the double Ammunition Cases to save on stash space but these will be readily available with some further quest progression and needing to store significant amounts of ammo is not necessary until higher PMC levels.

In my experience the two deciding factors for your personal decision will be the trader reputation loss, equipment gained and Roubles impact as follows:

• Trader Reputation Loss: Skier is one of the hardest traders to acquire reputation in the early game as he has limited quests available that are also hard for inexperienced players as they require PvP. For Standard Edition accounts that starts with lower initial trader reputation the ability to preserve your Skier reputation can be useful as you won’t need to grind the Roubles, daily or weekly quests to regain it. The quests to regain reputation from Therapist and Prapor are significantly easier to complete and will cost you dramatically less than the 1 million Roubles for Skier’s reputation regain quest (Loyalty Buyout). For an experienced Tarkov player though the 1 million Roubles is a small price to pay to recover the Skier reputation and they will be comfortable completing the early PvP skier quests so the Skier reputation loss is unlikely to be a deciding factor.
• Equipment: The value of an injector case from Therapist is significant as it allows players to bring multiple stimulants into a raid. Whether it is helping you win a fight, sprint across the map faster or carry out additional loot the flexibility the injector case provides to experienced players is invaluable. This case is also a way to make money as players can place any stimulants (commonly Morphine) during raid in their secure container for free money even if they fail to extract. While the Skier quest is the only way to unlock the Zsh-1-2M helmet (black) from Ragman which is sold for a cheaper price than the tan variant it is not a critical helmet to your account.
• Roubles: Some players may prefer to maximise Roubles gained from this quest choice to help boost their early game EFT progression as it reduces the need to farm Roubles with your PMC or Scav. Skier is the best option here as the Grenade Case sells for a high value and players save 1 million Roubles by not having to complete the reputation quest. If you opt to ignore the reputation quest entirely though Therapist or Prapor may have a greater Rouble gain based on the current value of these reward items in Escape From Tarkov.

Written by

Samuel Franklin

Samuel Franklin is the founder and lead editor of the Games Finder team and enjoys video games across all genres and platforms.

Sam (Seelyon) is a seasoned Escape From Tarkov player with over 1,000 raids across multiple Tarkov patches while accumulating thousands of player kills and maintaining a 50% survival rate who favours a calculated playstyle. During these wipes he has earned the coveted Kappa secure container, proving his determination in the unforgiving world of Tarkov. His passion for the punishing game goes beyond personal accomplishment and he is driven by a desire to guide new players on their own Escape From Tarkov journey one raid at a time.

Through countless firefights, strategic flanks and exhilarating boss encounters, he has accumulated a deep understanding of the game’s mechanics and nuances that allows him to offer valuable insights and strategies to those seeking to navigate the complexities of Tarkov.