The question comes first
We begin with the decision you need to make, the constraints around it, and the people who need to act on the answer.
About PSL
Senior packaging expertise for decisions you can act on.
Felix Gass founded PSL after 11 years at P&G, working across packaging disciplines and with several business units in Europe and China. That experience shaped a clear conviction: packaging decisions need to be made earlier, alongside brand and creative work, technology, materials, structures, machinery, and investment.
PSL was created to bring those decisions forward and carry them beyond the recommendation. The work connects technical reality, commercial priorities, and implementation so teams can see the choices clearly and move with confidence.
Sustainable packaging strategy has always been the focus. As regulation evolved, compliance and data became part of the work too. Today, Felix brings almost two decades of experience across the packaging value chain to every project. PSL remains founder-led and independent, with the same purpose: to make packaging decisions clear, visible across the business, and strong enough to last.
How
PSL
works.
Our ambition is to make packaging strategy a shared direction that people can act on and carry forward. We approach it with curiosity, independent judgement, and an understanding of both the possibilities and the constraints. Brand and creative ambition belong in the same conversation as materials, technology, production, and investment.
For us, good strategy makes priorities and trade-offs visible. It explains why a direction has been chosen and gives teams the confidence to follow it. It should be ambitious enough to create progress, practical enough to implement, and strong enough to remain useful as conditions change. Sustainable packaging is the foundation of this approach, with regulation and data informing the choices within a broader business perspective.
The full picture matters
PSL connects regulation, commercial priorities, materials, production, machinery, and implementation before recommending a direction.
We stay involved
The person who understands the question remains involved through the recommendation and delivery, with additional specialists brought in when needed.
Industries we serve
Experience across the packaging value chain.
From consumer products and private label to materials, machinery, and industrial packaging, PSL understands how decisions affect every part of the work.
Cosmetics
Premium design, small formats, complex components, and demanding production requirements all need to work together. PSL helps cosmetics brands make clear choices and carry them through development and implementation.
Industry contribution
Active in the conversations shaping packaging.
PSL contributes through conference talks, panel discussions, moderation, authored articles, and industry interviews. The subjects come directly from PSL’s work across regulation, strategy, development, machinery, reuse, and implementation.
- dvi · Dresdner VerpackungstagungPanel talkComing upView
Reuse for cosmetics packaging
Reuse in cosmetics: consumer behaviour, return-system data, and the operational requirements needed to move from pilots to scalable systems.
German - interpack China · ShanghaiPresentationComing upView
PPWR: What does it mean for Asian exporters to the EU?
PPWR market access for Asian exporters: translating EU obligations into the evidence, documentation, and portfolio decisions needed to place packaging on the European market.
English - Cosmoprof Asia · Hong KongPanel talkComing upView
PPWR and beauty care
What PPWR means for beauty and personal-care packaging, from recyclability and minimisation to compliance evidence and cross-border market access.
English - FACHPACKVirtual talkView
Challenge statt Lastenheft – Schneller zur optimalen Verpackungslösung und -maschine
Technology-open packaging machinery sourcing: replacing a fixed specification with a structured challenge to compare suppliers, concepts, and investment risk.
German - CosmeticBusinessPanel talkView
Sind Verbraucher:innen bereit für Mehrweg im Kosmetikmarkt?
Consumer readiness, return behaviour, and the system requirements brands and retailers need to make reusable cosmetics packaging work.
German - Packaging EuropeAuthored articleView
Preparing for PPWR without waiting for every detail
How packaging teams can build evidence, prioritise portfolio decisions, and start PPWR readiness before every secondary rule is final.
English - CMT EventsConference moderationView
New Regulations on EU Plastic Packaging & Recycling
Moderator and Dean of the Morning Session, guiding discussions on PPWR enforcement, local recycling, food-contact safety, and the changing European plastics market.
English - Packaging EuropeAuthored articleView
Everything you need to know about the PPWR Declaration of Conformity
What the PPWR Declaration of Conformity requires, who signs it, and which technical evidence packaging teams need to prepare.
English - Packaging InsightsEditorial interviewView
EU PPWR: Packaging industry shifts to evidence-based compliance ahead of deadline
Why PPWR compliance depends on evidence, portfolio data, and clear responsibility across brands, suppliers, and packaging teams.
English - FACHPACKVirtual talkView
Von Testlauf zur Transformation: Mehrweg in der Kosmetikbranche
Scaling reuse in cosmetics from pilot to functioning ecosystem across brands, retailers, consumers, return infrastructure, and operations.
German - FACHPACK · PACKBOXConference talkView
Verpackung: Warum Mehrweg eine gute Lösung ist – eine Einführung
Why reusable packaging can create value in cosmetics and what brands and retailers must resolve before a reuse model becomes commercially viable.
German - Packaging InsightsKey interviewView
AI drives sustainable design and recycling infrastructure advancements
How AI, fibre-based formats, recycling infrastructure, and regulation influence sustainable packaging design and implementation decisions.
English
Network & memberships
Independent advice. Connected expertise.
PSL participates in the organisations shaping packaging practice and draws on trusted specialists when a project needs additional depth.
Let us talk through your packaging question
A few lines are enough to start. If you prefer to talk, book a 30-minute call. We will listen, ask questions, and explain how PSL can help.
Choose the easiest way to start.
Book a 30-minute call ➜